diff --git a/curios/harmony-connector/curio.json b/curios/harmony-connector/curio.json
index 75cce70..655c586 100644
--- a/curios/harmony-connector/curio.json
+++ b/curios/harmony-connector/curio.json
@@ -3,7 +3,7 @@
   "id": "dev.trove.harmony-connector",
   "name": "Harmony Connector",
   "description": "连接鸿蒙设备，收发完整文件夹、管理应用，在独立窗口中投屏并通过键鼠操作。",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "engine": { "trove": ">=0.1.0 <1.0.0" },
   "icon": "assets/icon.svg",
   "ui": {
diff --git a/curios/harmony-connector/legal/THIRD-PARTY.md b/curios/harmony-connector/legal/THIRD-PARTY.md
index 5f0100d..09bbd06 100644
--- a/curios/harmony-connector/legal/THIRD-PARTY.md
+++ b/curios/harmony-connector/legal/THIRD-PARTY.md
@@ -30,7 +30,10 @@ The native viewer additionally uses the unmodified Huawei components distributed
 in `xdevice-devicetest` 26.0.0.500 (Hypium 26):
 
 - `devicetest/res/prototype/native/uitest_agent_v1.2.3.so` for touch control.
-- `devicetest/res/recorder/libscrcpy_server_unix_6.6-20260629.z.so` for H.264 video.
+- `devicetest/res/recorder/libscrcpy_server_unix_*.z.so` for H.264 video:
+  6.6-20260629, 6.6-20260418, 6.5-20260313, 6.4-20260113 and 6.3.1-20260113.
+  These original official variants are tried in that order when a device cannot
+  start the previous variant; all use a device Unix socket.
 
 Their wheel license is preserved in `hypium/LICENSE-26`; file identities and
 SHA-256 checksums are in `hypium/provenance-26.json`. Upstream copyright belongs
diff --git a/curios/harmony-connector/native/Cargo.lock b/curios/harmony-connector/native/Cargo.lock
index a44a7e4..f9d8880 100644
--- a/curios/harmony-connector/native/Cargo.lock
+++ b/curios/harmony-connector/native/Cargo.lock
@@ -259,7 +259,7 @@ dependencies = [
 
 [[package]]
 name = "harmony-connector"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "anyhow",
  "base64",
diff --git a/curios/harmony-connector/native/Cargo.toml b/curios/harmony-connector/native/Cargo.toml
index ce2ca9c..6d931a2 100644
--- a/curios/harmony-connector/native/Cargo.toml
+++ b/curios/harmony-connector/native/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "harmony-connector"
-version = "0.5.0"
+version = "0.5.1"
 edition = "2021"
 publish = false
 
diff --git a/curios/harmony-connector/native/src/hdc.rs b/curios/harmony-connector/native/src/hdc.rs
index 3c14ab7..439da87 100644
--- a/curios/harmony-connector/native/src/hdc.rs
+++ b/curios/harmony-connector/native/src/hdc.rs
@@ -1,6 +1,7 @@
 mod files;
 mod screen;
 mod screen_agent;
+mod screen_daemon;
 mod screen_input;
 mod screen_lease;
 mod screen_protocol;
diff --git a/curios/harmony-connector/native/src/hdc/screen_agent.rs b/curios/harmony-connector/native/src/hdc/screen_agent.rs
index aa01dcb..bb0e988 100644
--- a/curios/harmony-connector/native/src/hdc/screen_agent.rs
+++ b/curios/harmony-connector/native/src/hdc/screen_agent.rs
@@ -138,9 +138,9 @@ impl Rpc {
         Ok((dimension("x")?, dimension("y")?))
     }
 }
-pub(super) fn existing_agents(tool: &Tool, target: &str) -> Result<Vec<(String, String)>> {
+pub(super) fn processes(tool: &Tool, target: &str) -> Result<Vec<(String, String)>> {
     let pids = tool.run_output(&["-t", target, "shell", "pidof uitest xdevice_scrcpy"], 2)?;
-    let mut owned = Vec::new();
+    let mut result = Vec::new();
     for pid in pids.split_whitespace() {
         if !pid.bytes().all(|b| b.is_ascii_digit()) {
             return Err(fault("无法检查设备调试会话。"));
@@ -149,9 +149,15 @@ pub(super) fn existing_agents(tool: &Tool, target: &str) -> Result<Vec<(String,
             &["-t", target, "shell", &format!("cat /proc/{pid}/cmdline")],
             2,
         )?;
-        if cmdline.contains("No such file") {
-            continue;
+        if !cmdline.contains("No such file") {
+            result.push((pid.to_owned(), cmdline));
         }
+    }
+    Ok(result)
+}
+pub(super) fn existing_agents(tool: &Tool, target: &str) -> Result<Vec<(String, String)>> {
+    let mut owned = Vec::new();
+    for (pid, cmdline) in processes(tool, target)? {
         let args: Vec<_> = cmdline.split('\0').filter(|s| !s.is_empty()).collect();
         let is_uitest = args
             .first()
diff --git a/curios/harmony-connector/native/src/hdc/screen_daemon.rs b/curios/harmony-connector/native/src/hdc/screen_daemon.rs
new file mode 100644
index 0000000..4b2fa71
--- /dev/null
+++ b/curios/harmony-connector/native/src/hdc/screen_daemon.rs
@@ -0,0 +1,307 @@
+//! Device-agent startup is complete only when its process and Unix socket exist.
+//! Candidate versions are official ABI variants, not HarmonyOS product versions.
+use super::screen_agent::{self, Rpc};
+use super::screen_lease::{self, Lease, SOCKET};
+use super::*;
+use std::{io::Write, net::TcpListener, time::Instant};
+
+const CONTROL: &[u8] =
+    include_bytes!("../../../../../vendor/harmony-connector/hypium/uitest_agent_v1.2.3.so");
+const VIDEO_SOCKET: &str = "localabstract:scrcpy_grpc_socket";
+const VIDEO_ARGS: &str =
+    "-m 0 -scale 2 -frameRate 60 -bitRate 8000000 -iFrameInterval 1000 -screenId 0";
+macro_rules! recorder {
+    ($version:literal) => {
+        (
+            $version,
+            include_bytes!(concat!(
+                "../../../../../vendor/harmony-connector/hypium/libscrcpy_server_unix_",
+                $version,
+                ".z.so"
+            )) as &'static [u8],
+        )
+    };
+}
+const VIDEOS: &[(&str, &[u8])] = &[
+    recorder!("6.6-20260629"),
+    recorder!("6.6-20260418"),
+    recorder!("6.5-20260313"),
+    recorder!("6.4-20260113"),
+    recorder!("6.3.1-20260113"),
+];
+
+pub(super) struct Resources {
+    pub tool: Tool,
+    pub target: String,
+    files: Vec<String>,
+    forwards: Vec<(String, String)>,
+    lease: Lease,
+    video: Option<(usize, String)>,
+}
+impl Resources {
+    pub fn open(tool: Tool, target: String) -> Result<Self> {
+        tool.connected(&target)?;
+        let root = env::var_os("HOME")
+            .map(PathBuf::from)
+            .unwrap_or_else(env::temp_dir)
+            .join("Library/HarmonyConnector/sessions");
+        let lease = Lease::acquire(&root, &tool, &target)?;
+        let existing = screen_agent::existing_agents(&tool, &target)?;
+        for socket in [SOCKET, VIDEO_SOCKET] {
+            if !screen_lease::forwards_socket(&tool, &target, socket)?.is_empty() {
+                return Err(screen_lease::busy());
+            }
+        }
+        for (pid, cmdline) in existing {
+            screen_agent::terminate_agent(&tool, &target, &pid, &cmdline)?;
+        }
+        Ok(Self {
+            tool,
+            target,
+            files: Vec::new(),
+            forwards: Vec::new(),
+            lease,
+            video: None,
+        })
+    }
+    fn launch(&mut self, bytes: &[u8], arguments: &str) -> Result<String> {
+        let mut file = tempfile::Builder::new()
+            .prefix("trove-screen-")
+            .suffix(".so")
+            .tempfile()?;
+        file.write_all(bytes)?;
+        let name = file
+            .path()
+            .file_name()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .to_owned();
+        self.files.push(name.clone());
+        self.tool.run(
+            &[
+                "-t",
+                &self.target,
+                "file",
+                "send",
+                file.path().to_str().unwrap(),
+                &format!("/data/local/tmp/{name}"),
+            ],
+            10,
+        )?;
+        // Keep loader errors from the daemon; a successful hdc shell exit is not readiness.
+        let result = self.tool.run_output(&["-t", &self.target, "shell",
+            &format!("uitest start-daemon singleness --extension-name {name} {arguments} > /data/local/tmp/{name}.log 2>&1")], 5);
+        match result {
+            Ok(_) => Ok(name),
+            Err(e) if e.code == "hdc.command_failed" => Ok(name),
+            Err(e) => Err(e),
+        }
+    }
+    fn ready(&self, name: &str, socket: &str) -> Result<bool> {
+        let process = screen_agent::existing_agents(&self.tool, &self.target)?
+            .iter()
+            .any(|(_, cmdline)| cmdline.split('\0').any(|arg| arg == name));
+        if !process {
+            return Ok(false);
+        }
+        let sockets = self
+            .tool
+            .run(&["-t", &self.target, "shell", "cat /proc/net/unix"], 2)?;
+        let name = socket.strip_prefix("localabstract:").unwrap();
+        Ok(sockets.lines().any(|line| {
+            line.split_whitespace()
+                .last()
+                .is_some_and(|path| path.trim_start_matches('@') == name)
+        }))
+    }
+    fn wait_ready(&self, name: &str, socket: &str, version: &str) -> Result<()> {
+        let deadline = Instant::now() + Duration::from_secs(3);
+        loop {
+            if self.tool.cancel.load(Ordering::Acquire) {
+                return Err(Fault::new("operation.cancelled", "投屏连接已取消。"));
+            }
+            if self.ready(name, socket)? {
+                return Ok(());
+            }
+            if Instant::now() >= deadline {
+                let output = self
+                    .tool
+                    .run_output(
+                        &[
+                            "-t",
+                            &self.target,
+                            "shell",
+                            &format!("cat /data/local/tmp/{name}.log"),
+                        ],
+                        2,
+                    )
+                    .unwrap_or_default();
+                let detail: String = output
+                    .chars()
+                    .filter(|c| !c.is_control() || matches!(c, '\n' | '\t'))
+                    .take(800)
+                    .collect();
+                return Err(Fault::new(
+                    "screen.agent_start_failed",
+                    format!("设备投屏组件 {version} 未启动监听。{}", detail.trim()),
+                ));
+            }
+            thread::sleep(Duration::from_millis(100));
+        }
+    }
+    fn forward(&mut self, socket: &str) -> Result<u16> {
+        let listener = TcpListener::bind(("127.0.0.1", 0)).map_err(|e| {
+            Fault::new(
+                "screen.forward_failed",
+                format!("无法分配本机投屏端口：{e}"),
+            )
+        })?;
+        let port = listener
+            .local_addr()
+            .map_err(|e| Fault::new("screen.forward_failed", e.to_string()))?
+            .port();
+        drop(listener);
+        let local = format!("tcp:{port}");
+        self.forwards.push((local.clone(), socket.into()));
+        self.lease.record_forwards(&self.forwards)?;
+        self.tool
+            .run(&["-t", &self.target, "fport", &local, socket], 3)?;
+        if !screen_lease::forwards_socket(&self.tool, &self.target, socket)?.contains(&local) {
+            return Err(Fault::new(
+                "screen.forward_failed",
+                format!("HDC 未建立投屏转发：{socket}。"),
+            ));
+        }
+        Ok(port)
+    }
+    fn remove_forward(&mut self, socket: &str) -> Result<()> {
+        let registered = screen_lease::forwards_socket(&self.tool, &self.target, socket)?;
+        for (local, remote) in self.forwards.iter().filter(|(_, remote)| remote == socket) {
+            if registered.contains(local) {
+                self.tool
+                    .run(&["-t", &self.target, "fport", "rm", local, remote], 3)?;
+                if screen_lease::forwards_socket(&self.tool, &self.target, remote)?.contains(local)
+                {
+                    return Err(Fault::new(
+                        "screen.forward_failed",
+                        "HDC 未能释放旧的投屏转发。",
+                    ));
+                }
+            }
+        }
+        self.forwards.retain(|(_, remote)| remote != socket);
+        self.lease.record_forwards(&self.forwards)
+    }
+    fn remove_agent(&mut self, name: &str) -> Result<()> {
+        // Only the exact file generated by this session can be terminated.
+        for (pid, cmdline) in screen_agent::processes(&self.tool, &self.target)? {
+            if cmdline.split('\0').any(|arg| arg == name) {
+                screen_agent::terminate_agent(&self.tool, &self.target, &pid, &cmdline)?;
+            }
+        }
+        self.tool.run(
+            &[
+                "-t",
+                &self.target,
+                "shell",
+                &format!("rm -f /data/local/tmp/{name} /data/local/tmp/{name}.log"),
+            ],
+            2,
+        )?;
+        self.files.retain(|file| file != name);
+        Ok(())
+    }
+    pub fn control(&mut self) -> Result<(u16, Rpc)> {
+        let name = self.launch(CONTROL, "")?;
+        self.wait_ready(&name, SOCKET, "UITest 1.2.3")?;
+        let mut last = None;
+        for _ in 0..3 {
+            self.remove_forward(SOCKET)?;
+            let port = self.forward(SOCKET)?;
+            let deadline = Instant::now() + Duration::from_secs(1);
+            loop {
+                match Rpc::connect(port).and_then(|mut rpc| {
+                    rpc.create_driver()?;
+                    Ok(rpc)
+                }) {
+                    Ok(rpc) => return Ok((port, rpc)),
+                    Err(e) if e.code == "screen.remote_error" => return Err(e),
+                    Err(e) => last = Some(e),
+                }
+                if Instant::now() >= deadline {
+                    break;
+                }
+                thread::sleep(Duration::from_millis(100));
+            }
+        }
+        Err(Fault::new(
+            "screen.control_connect_failed",
+            format!(
+                "设备控制组件已启动，但 HDC 控制通道无法连接：{}",
+                last.unwrap().message
+            ),
+        ))
+    }
+    pub fn video(&mut self) -> Result<u16> {
+        self.video_from(0)
+    }
+    fn video_from(&mut self, start: usize) -> Result<u16> {
+        let mut failures = Vec::new();
+        for (index, (version, bytes)) in VIDEOS.iter().enumerate().skip(start) {
+            let name = self.launch(bytes, VIDEO_ARGS)?;
+            match self.wait_ready(&name, VIDEO_SOCKET, version) {
+                Ok(()) => {
+                    self.video = Some((index, name));
+                    return self.forward(VIDEO_SOCKET);
+                }
+                Err(error) if error.code == "screen.agent_start_failed" => {
+                    failures.push(error.message);
+                    self.remove_agent(&name)?;
+                }
+                Err(error) => return Err(error),
+            }
+        }
+        Err(Fault::new(
+            "screen.video_agent_unavailable",
+            format!("官方视频组件均未能在设备上启动。{}", failures.join("\n")),
+        ))
+    }
+    pub fn reconnect_video(&mut self) -> Result<u16> {
+        self.remove_forward(VIDEO_SOCKET)?;
+        let (index, name) = self
+            .video
+            .clone()
+            .ok_or_else(|| Fault::new("screen.closed", "视频组件已停止。"))?;
+        if self.ready(&name, VIDEO_SOCKET)? {
+            return self.forward(VIDEO_SOCKET);
+        }
+        self.remove_agent(&name)?;
+        self.video = None;
+        self.video_from(index + 1)
+    }
+    pub fn close(&mut self) -> Result<()> {
+        if self.files.is_empty() && self.forwards.is_empty() {
+            return Ok(());
+        }
+        // Cleanup must remain possible when the caller cancelled startup.
+        self.tool.cancel = Arc::new(AtomicBool::new(false));
+        let mut error = None;
+        for socket in [VIDEO_SOCKET, SOCKET] {
+            if let Err(e) = self.remove_forward(socket) {
+                error.get_or_insert(e);
+            }
+        }
+        for name in self.files.clone() {
+            if let Err(e) = self.remove_agent(&name) {
+                error.get_or_insert(e);
+            }
+        }
+        error.map_or(Ok(()), Err)
+    }
+}
+impl Drop for Resources {
+    fn drop(&mut self) {
+        let _ = self.close();
+    }
+}
diff --git a/curios/harmony-connector/native/src/hdc/screen_recorder.rs b/curios/harmony-connector/native/src/hdc/screen_recorder.rs
index df95da6..eaa7611 100644
--- a/curios/harmony-connector/native/src/hdc/screen_recorder.rs
+++ b/curios/harmony-connector/native/src/hdc/screen_recorder.rs
@@ -1,146 +1,13 @@
 //! Owns the official video and touch daemons as one USB debugging session.
-use super::screen_agent::{self, Rpc};
-use super::screen_lease::{self, Lease, SOCKET};
+use super::screen_agent::Rpc;
+use super::screen_daemon::Resources;
 use super::*;
 use std::{
     collections::{HashSet, VecDeque},
-    io::Write,
-    net::TcpListener,
     sync::Condvar,
     time::Instant,
 };
 
-const CONTROL: &[u8] =
-    include_bytes!("../../../../../vendor/harmony-connector/hypium/uitest_agent_v1.2.3.so");
-const VIDEO: &[u8] = include_bytes!(
-    "../../../../../vendor/harmony-connector/hypium/libscrcpy_server_unix_6.6-20260629.z.so"
-);
-const VIDEO_SOCKET: &str = "localabstract:scrcpy_grpc_socket";
-
-struct Resources {
-    tool: Tool,
-    target: String,
-    files: Vec<String>,
-    forwards: Vec<(String, String)>,
-    lease: Lease,
-}
-impl Resources {
-    fn upload(&mut self, bytes: &[u8], arguments: &str) -> Result<()> {
-        let mut file = tempfile::Builder::new()
-            .prefix("trove-screen-")
-            .suffix(".so")
-            .tempfile()?;
-        file.write_all(bytes)?;
-        let name = file
-            .path()
-            .file_name()
-            .unwrap()
-            .to_str()
-            .unwrap()
-            .to_owned();
-        self.files.push(name.clone());
-        self.tool.run(
-            &[
-                "-t",
-                &self.target,
-                "file",
-                "send",
-                file.path().to_str().unwrap(),
-                &format!("/data/local/tmp/{name}"),
-            ],
-            10,
-        )?;
-        self.tool.run(
-            &[
-                "-t",
-                &self.target,
-                "shell",
-                &format!("uitest start-daemon singleness --extension-name {name} {arguments}"),
-            ],
-            5,
-        )?;
-        Ok(())
-    }
-    fn forward(&mut self, socket: &str) -> Result<u16> {
-        let listener = TcpListener::bind(("127.0.0.1", 0))?;
-        let port = listener.local_addr()?.port();
-        drop(listener);
-        let local = format!("tcp:{port}");
-        self.forwards.push((local.clone(), socket.into()));
-        // Record before the command, so a crash between forwarding and return is recoverable.
-        self.lease.record_forwards(&self.forwards)?;
-        self.tool
-            .run(&["-t", &self.target, "fport", &local, socket], 3)?;
-        Ok(port)
-    }
-    fn close(&mut self) -> Result<()> {
-        if self.files.is_empty() && self.forwards.is_empty() {
-            return Ok(());
-        }
-        let cleanup = Tool {
-            path: self.tool.path.clone(),
-            cancel: Arc::new(AtomicBool::new(false)),
-        };
-        let mut error = None;
-        for (local, remote) in &self.forwards {
-            if let Err(e) = cleanup.run(&["-t", &self.target, "fport", "rm", local, remote], 2) {
-                error.get_or_insert(e);
-            }
-        }
-        if error.is_none() {
-            self.forwards.clear();
-            self.lease.record(None)?;
-        }
-        // Inspect full command lines before signalling; never kill a foreign daemon.
-        let pids = cleanup.run_output(
-            &["-t", &self.target, "shell", "pidof uitest xdevice_scrcpy"],
-            2,
-        )?;
-        for pid in pids
-            .split_whitespace()
-            .filter(|s| s.bytes().all(|b| b.is_ascii_digit()))
-        {
-            let cmdline = cleanup.run_output(
-                &[
-                    "-t",
-                    &self.target,
-                    "shell",
-                    &format!("cat /proc/{pid}/cmdline"),
-                ],
-                2,
-            )?;
-            if cmdline
-                .split('\0')
-                .any(|arg| self.files.iter().any(|file| file == arg))
-            {
-                if let Err(e) = screen_agent::terminate_agent(&cleanup, &self.target, pid, &cmdline)
-                {
-                    error.get_or_insert(e);
-                }
-            }
-        }
-        for name in self.files.drain(..) {
-            if let Err(e) = cleanup.run(
-                &[
-                    "-t",
-                    &self.target,
-                    "shell",
-                    &format!("rm -f /data/local/tmp/{name}"),
-                ],
-                2,
-            ) {
-                error.get_or_insert(e);
-            }
-        }
-        error.map_or(Ok(()), Err)
-    }
-}
-impl Drop for Resources {
-    fn drop(&mut self) {
-        let _ = self.close();
-    }
-}
-
 #[derive(Clone, Copy)]
 pub(super) struct Dimensions {
     pub width: u32,
@@ -159,6 +26,7 @@ pub(super) struct Recorder {
     pub cancel: Arc<AtomicBool>,
     pub port: u16,
     pub keyframe: AtomicBool,
+    pub ready: AtomicBool,
     pub error: Mutex<Option<Fault>>,
     dimensions: Arc<Mutex<Dimensions>>,
     queue: Arc<Queue>,
@@ -167,51 +35,10 @@ pub(super) struct Recorder {
 }
 impl Recorder {
     pub fn open(tool: Tool, target: String) -> Result<Arc<Self>> {
-        tool.connected(&target)?;
-        let root = env::var_os("HOME")
-            .map(PathBuf::from)
-            .unwrap_or_else(env::temp_dir)
-            .join("Library/HarmonyConnector/sessions");
-        let lease = Lease::acquire(&root, &tool, &target)?;
-        let existing = screen_agent::existing_agents(&tool, &target)?;
-        for socket in [SOCKET, VIDEO_SOCKET] {
-            if !screen_lease::forwards_socket(&tool, &target, socket)?.is_empty() {
-                return Err(screen_lease::busy());
-            }
-        }
-        for (pid, cmdline) in existing {
-            screen_agent::terminate_agent(&tool, &target, &pid, &cmdline)?;
-        }
-        let mut resources = Resources {
-            tool,
-            target,
-            files: Vec::new(),
-            forwards: Vec::new(),
-            lease,
-        };
-        resources.upload(CONTROL, "")?;
-        let control_port = resources.forward(SOCKET)?;
-        let deadline = Instant::now() + Duration::from_secs(5);
-        let mut control = loop {
-            if resources.tool.cancel.load(Ordering::Acquire) {
-                return Err(Fault::new("screen.cancelled", "投屏连接已取消。"));
-            }
-            let attempt = Rpc::connect(control_port).and_then(|mut rpc| {
-                rpc.create_driver()?;
-                Ok(rpc)
-            });
-            match attempt {
-                Ok(rpc) => break rpc,
-                Err(e) if Instant::now() >= deadline => return Err(e),
-                Err(_) => thread::sleep(Duration::from_millis(100)),
-            }
-        };
+        let mut resources = Resources::open(tool, target)?;
+        let (control_port, mut control) = resources.control()?;
         let (width, height) = control.dimensions()?;
-        resources.upload(
-            VIDEO,
-            "-m 0 -scale 2 -frameRate 60 -bitRate 8000000 -iFrameInterval 1000 -screenId 0",
-        )?;
-        let port = resources.forward(VIDEO_SOCKET)?;
+        let port = resources.video()?;
         let tool = Tool {
             path: resources.tool.path.clone(),
             cancel: Arc::new(AtomicBool::new(false)),
@@ -235,6 +62,7 @@ impl Recorder {
             cancel: Arc::new(AtomicBool::new(false)),
             port,
             keyframe: AtomicBool::new(false),
+            ready: AtomicBool::new(false),
             error: Mutex::new(None),
             dimensions: Arc::new(Mutex::new(Dimensions {
                 width,
@@ -273,6 +101,17 @@ impl Recorder {
         *owner.worker.lock().unwrap() = Some(worker);
         Ok(owner)
     }
+    pub fn reconnect_video(&self) -> Result<u16> {
+        if self.cancel.load(Ordering::Acquire) {
+            return Err(Fault::new("screen.closed", "投屏已停止。"));
+        }
+        self.resources
+            .lock()
+            .unwrap()
+            .as_mut()
+            .ok_or_else(|| Fault::new("screen.closed", "投屏已停止。"))?
+            .reconnect_video()
+    }
     pub fn dimensions(&self) -> Dimensions {
         *self.dimensions.lock().unwrap()
     }
diff --git a/curios/harmony-connector/native/src/hdc/screen_video.rs b/curios/harmony-connector/native/src/hdc/screen_video.rs
index e364e59..813a52f 100644
--- a/curios/harmony-connector/native/src/hdc/screen_video.rs
+++ b/curios/harmony-connector/native/src/hdc/screen_video.rs
@@ -50,10 +50,27 @@ pub(super) fn receive(
 ) -> Result<()> {
     tokio::runtime::Builder::new_current_thread()
         .enable_all()
-        .build()?
+        .build()
+        .map_err(fault)?
         .block_on(async {
-            let socket = tokio::net::TcpStream::connect(("127.0.0.1", port)).await?;
-            socket.set_nodelay(true)?;
+            let socket = tokio::time::timeout(
+                Duration::from_secs(2),
+                tokio::net::TcpStream::connect(("127.0.0.1", port)),
+            )
+            .await
+            .map_err(|e| {
+                Fault::new(
+                    "screen.video_connect_failed",
+                    format!("连接 HDC 视频转发超时：{e}"),
+                )
+            })?
+            .map_err(|e| {
+                Fault::new(
+                    "screen.video_connect_failed",
+                    format!("无法连接 HDC 视频转发端口 {port}：{e}"),
+                )
+            })?;
+            socket.set_nodelay(true).map_err(fault)?;
             let (mut sender, connection) = h2::client::handshake(socket).await.map_err(fault)?;
             let connection = tokio::spawn(connection);
             let result = async {
diff --git a/curios/harmony-connector/native/src/hdc/screen_window.rs b/curios/harmony-connector/native/src/hdc/screen_window.rs
index f69a619..ff23754 100644
--- a/curios/harmony-connector/native/src/hdc/screen_window.rs
+++ b/curios/harmony-connector/native/src/hdc/screen_window.rs
@@ -61,6 +61,7 @@ impl Window {
         current.as_ref().map_or(json!({"active":false}), |v| {
             json!({
                 "active":!v.recorder.cancel.load(Ordering::Acquire),"target":v.target,
+                "ready":v.recorder.ready.load(Ordering::Acquire),
                 "error":v.recorder.error.lock().unwrap().clone()
             })
         })
@@ -74,7 +75,9 @@ impl Window {
                     return Err(screen_lease::busy());
                 }
                 viewer.pipe.send(json!({"kind":"focus"}), &[])?;
-                return Ok(json!({"active":true,"target":request.target}));
+                return Ok(
+                    json!({"active":true,"ready":viewer.recorder.ready.load(Ordering::Acquire),"target":request.target}),
+                );
             }
         }
         if let Some(viewer) = current.take() {
@@ -136,6 +139,8 @@ impl Window {
                         *reader_recorder.error.lock().unwrap() = Some(error);
                         break;
                     }
+                } else if value["event"] == "presented" {
+                    reader_recorder.ready.store(true, Ordering::Release);
                 } else if value["event"] == "decoderError" {
                     reader_recorder.keyframe.store(true, Ordering::Release);
                 }
@@ -147,10 +152,11 @@ impl Window {
         let worker = thread::spawn(move || {
             let mut sequence = 0u64;
             let mut samples = VecDeque::new();
-            let startup = Instant::now();
+            let mut port = worker_recorder.port;
+            let mut retries = 0;
             let result = loop {
                 let result = super::screen_video::receive(
-                    worker_recorder.port,
+                    port,
                     &worker_recorder.cancel,
                     &worker_recorder.keyframe,
                     |bytes| {
@@ -173,11 +179,16 @@ impl Window {
                 );
                 if result.is_ok()
                     || sequence > 0
-                    || startup.elapsed() > Duration::from_secs(5)
+                    || retries >= 2
                     || worker_recorder.cancel.load(Ordering::Acquire)
                 {
                     break result;
                 }
+                retries += 1;
+                port = match worker_recorder.reconnect_video() {
+                    Ok(port) => port,
+                    Err(error) => break Err(error),
+                };
                 thread::sleep(Duration::from_millis(100));
             };
             if let Err(error) = result {
@@ -197,7 +208,7 @@ impl Window {
             target: request.target.clone(),
             worker: Some(worker),
         });
-        Ok(json!({"active":true,"target":request.target}))
+        Ok(json!({"active":true,"ready":false,"target":request.target}))
     }
     pub fn stop(&self) -> Result<Value> {
         if let Some(viewer) = self.current.lock().unwrap().take() {
diff --git a/curios/harmony-connector/ui/screen-window.js b/curios/harmony-connector/ui/screen-window.js
index 581d14e..be82b4c 100644
--- a/curios/harmony-connector/ui/screen-window.js
+++ b/curios/harmony-connector/ui/screen-window.js
@@ -1,19 +1,19 @@
 export function screen({ call, notice, onBusy }) {
   const $ = (id) => document.getElementById(id);
-  const state = { target: "", available: false, blocked: false, working: false, active: false, disposed: false };
+  const state = { target: "", available: false, blocked: false, working: false, active: false, ready: false, disposed: false };
   let timer, error;
   function render() {
     $("screen-start").disabled = state.working || state.blocked || !state.available;
     $("screen-start").textContent = state.working ? "正在连接…" : state.active ? "显示投屏窗口" : "打开投屏窗口";
     $("screen-stop").disabled = state.working || !state.active;
-    $("screen-status").textContent = state.active ? "正在独立窗口中投屏 · 默认鼠标控制" : "让手机，来到桌面。";
+    $("screen-status").textContent = state.active ? state.ready ? "正在独立窗口中投屏 · 默认鼠标控制" : "正在建立视频连接…" : "让手机，来到桌面。";
   }
   async function status() {
     if (state.disposed) return;
     try {
       const result = await call("screenWindowStatus", {});
       if (state.disposed) return;
-      if (!state.working) state.active = result.active;
+      if (!state.working) { state.active = result.active; state.ready = !!result.ready; }
       if (result.error && result.error.message !== error) {
         error = result.error.message;
         notice(error);
@@ -30,6 +30,7 @@ export function screen({ call, notice, onBusy }) {
     try {
       const result = await call(method, args);
       state.active = result.active;
+      state.ready = !!result.ready;
       error = undefined;
     } catch (error) { notice(error.message || String(error)); }
     finally {
diff --git a/curios/harmony-connector/viewer/Main.swift b/curios/harmony-connector/viewer/Main.swift
index ccacc36..049e48a 100644
--- a/curios/harmony-connector/viewer/Main.swift
+++ b/curios/harmony-connector/viewer/Main.swift
@@ -9,11 +9,12 @@ final class ViewerApp: NSObject, NSApplicationDelegate, NSWindowDelegate {
     private var pending: (CVPixelBuffer, ScreenFrame)?
     private var scheduled = false
     private var geometry: UInt64 = 0
+    private var announced = false
     private let deviceName = CommandLine.arguments.dropFirst().first ?? "Harmony"
 
     func applicationDidFinishLaunching(_ notification: Notification) {
         window = NSWindow(contentRect: NSRect(x: 0, y: 0, width: 380, height: 760), styleMask: [.titled, .closable, .miniaturizable, .resizable], backing: .buffered, defer: false)
-        window.title = deviceName
+        window.title = "\(deviceName) · 正在连接视频…"
         window.minSize = NSSize(width: 220, height: 260)
         window.backgroundColor = .black
         window.isReleasedWhenClosed = false
@@ -57,6 +58,10 @@ final class ViewerApp: NSObject, NSApplicationDelegate, NSWindowDelegate {
             self.pendingLock.unlock()
             guard let (image, frame) = current else { return }
             self.view.display(image, frame: frame)
+            if !self.announced {
+                self.announced = true
+                ViewerWire.send(["event": "presented"])
+            }
             if self.geometry != frame.geometry {
                 let initial = self.geometry == 0
                 self.geometry = frame.geometry
diff --git a/docs/harmony-connector.md b/docs/harmony-connector.md
index eb3b7fa..4011d21 100644
--- a/docs/harmony-connector.md
+++ b/docs/harmony-connector.md
@@ -1,6 +1,6 @@
 # Harmony Connector
 
-插件 ID：`dev.trove.harmony-connector`。当前版本：`0.5.0`。
+插件 ID：`dev.trove.harmony-connector`。当前版本：`0.5.1`。
 
 macOS 上的鸿蒙设备连接工具。通过 USB 收发文件与完整文件夹；使用官方 HDC 管理应用、保存截图、导出日志和调试应用数据。功能按连接工具、设备实际能力和授权开放，不按 HarmonyOS 大版本或机型名称限制。
 
@@ -75,6 +75,8 @@ macOS 上的鸿蒙设备连接工具。通过 USB 收发文件与完整文件夹
 
 0.5.0 使用官方 Hypium 26 的 Unix H.264 recorder 和独立控制代理，经 HDC 转发视频及触摸通道。手机端编码，Mac 端 VideoToolbox 解码并立即显示。无需开发者账号、签名、手机应用或完整 SDK；用户只需官方 HDC 和已授权的设备 USB 调试。编码配置目标为 60 fps、8 Mbps、半尺寸，实际流畅度取决于设备，当前版本尚未进行真机性能验收。
 
+0.5.1 在设备代理进程及 Unix socket 就绪后才创建转发；按官方资源版本依次尝试兼容代理。首次连接失败会重新建立本插件的 HDC 转发。窗口收到首张解码画面之前显示连接中，失败区分组件启动、转发和视频连接，不再把网络错误归为 Mac 文件错误。
+
 组件与传输依据见[官方视频与触控调研](research/harmony-screen-performance.md)。旧 JPEG 后端接口仅保留用于诊断；管理页已使用独立视频窗口。
 
 ## 重连问题与 debug
diff --git a/docs/harmony-realtime-development.md b/docs/harmony-realtime-development.md
index 146db30..fbc206a 100644
--- a/docs/harmony-realtime-development.md
+++ b/docs/harmony-realtime-development.md
@@ -1,5 +1,8 @@
 # Harmony Connector 投屏开发记录
 
+2026-09-10：0.5.1 针对用户报告的 `无法读写 Mac 文件：Connection refused (os error 61)` 修改启动流程。代码可确认该提示来自视频 TCP 连接使用了通用文件 I/O 错误转换；此前没有确认设备代理/Unix socket 就绪，且只重试同一端口。现在增加官方代理候选、就绪检查、仅重建自身转发、启动日志和首帧状态。具体设备上的代理兼容性与连接恢复效果仍等待用户反馈；本轮只构建打包，未运行测试或真机验证。
+
+
 2026-09-10：0.5.0 改为独立 AppKit 窗口、官方 Unix H.264 视频流和默认实时触控。按用户要求，本轮只完成编码与构建，不运行测试、真机跑分或远程源安装验证。60 fps 是编码配置目标，不能作为已达到的性能结果。官方接口依据见[视频性能调研](research/harmony-screen-performance.md)。
 
 以下为旧版本历史记录。
diff --git a/docs/research/harmony-screen-performance.md b/docs/research/harmony-screen-performance.md
index 3c660bf..a5c39a1 100644
--- a/docs/research/harmony-screen-performance.md
+++ b/docs/research/harmony-screen-performance.md
@@ -227,3 +227,12 @@ macOS 14 及以上可使用该层的 sampleBufferRenderer，保留项目要求
 - 已完成：官方 26 包获取、静态解包、资源摘要、启动/选型脚本、proto 对比、Unix 绑定与触控参数的汇编核查。
 - 未完成且未声称完成：最新 Unix 原件在用户手机的加载兼容性、连续视频解码结果、流畅度/耗电/延迟测量、旧 1.2.2 agent 的触控全量契约复核。
 - 不需要为采用本路径继续下载完整 IDE、创建 HAP 或申请开发者签名；用户的实际前置条件是可用 HDC 与设备调试授权。原件与系统 ABI 的兼容性仍需清楚报告，不能失败后偷偷切回慢截图却继续显示“实时视频”。
+
+
+## 0.5.1 启动流程修正
+
+用户报告的 `Connection refused` 被 0.5.0 视频 TCP 连接处的通用 `std::io::Error → Fault` 包装成 Mac 文件错误。该代码路径可直接定位，但没有真机复现证据可以把底层拒绝进一步归因为某个代理 ABI。
+
+实现补齐官方 `RecordAgent` 已做的进程/Unix socket 就绪判断，按上表最新至最旧顺序选择能够启动的官方 Unix 原件。视频连接失败时移除并重建自身记录的转发；不会借用未知转发或终止外部进程。HDC 转发包含本机监听与对端激活阶段，发出 `fport` 命令本身不能代替端到端连接。[HDC 官方转发源码](https://github.com/openharmony/developtools_hdc/blob/master/src/common/forward.cpp)
+
+产品错误信息区分设备组件启动、HDC 转发及视频连接；首帧显示前保持“正在建立视频连接”。按用户要求，本轮未跑测试、真机实验或远程安装验证。
diff --git a/source/index.json b/source/index.json
index 8be10b8..b737a6b 100644
--- a/source/index.json
+++ b/source/index.json
@@ -2,7 +2,7 @@
   "schemaVersion": 1,
   "id": "trove-official",
   "name": "Trove 官方软件源",
-  "generatedAt": "2026-09-10T09:25:53.244Z",
+  "generatedAt": "2026-09-10T09:37:34.602Z",
   "curios": [
     {
       "id": "dev.trove.qa.host",
@@ -200,6 +200,21 @@
       "name": "Harmony Connector",
       "description": "连接鸿蒙设备，收发完整文件夹、管理应用，在独立窗口中投屏并通过键鼠操作。",
       "versions": [
+        {
+          "version": "0.5.1",
+          "engine": {
+            "trove": ">=0.1.0 <1.0.0"
+          },
+          "releasedAt": "2026-09-10T09:37:34.602Z",
+          "artifacts": [
+            {
+              "target": "aarch64-apple-darwin",
+              "url": "packages/dev.trove.harmony-connector/0.5.1/aarch64-apple-darwin.curio",
+              "sha256": "1bfed01377ab519c58c71f0a1597c107edd7242c1d96e288979a44929016cb74",
+              "size": 4718083
+            }
+          ]
+        },
         {
           "version": "0.5.0",
           "engine": {
diff --git a/source/packages/dev.trove.harmony-connector/0.5.1/aarch64-apple-darwin.curio b/source/packages/dev.trove.harmony-connector/0.5.1/aarch64-apple-darwin.curio
new file mode 100644
index 0000000..37fe417
Binary files /dev/null and b/source/packages/dev.trove.harmony-connector/0.5.1/aarch64-apple-darwin.curio differ
diff --git a/tools/fixtures/harmony-ui.mjs b/tools/fixtures/harmony-ui.mjs
index c039457..18f812f 100644
--- a/tools/fixtures/harmony-ui.mjs
+++ b/tools/fixtures/harmony-ui.mjs
@@ -69,9 +69,9 @@ window.__TROVE_CONTEXT__ = {
   platform: "macos",
 };
 window.__TROVE_BRIDGE__ = createMockBridge({
-  "@self.hdc.screenWindowOpen": () => ({ active: (screenActive = true) }),
+  "@self.hdc.screenWindowOpen": () => ({ active: (screenActive = true), ready: true }),
   "@self.hdc.screenWindowStop": () => ({ active: (screenActive = false) }),
-  "@self.hdc.screenWindowStatus": () => ({ active: screenActive }),
+  "@self.hdc.screenWindowStatus": () => ({ active: screenActive, ready: screenActive }),
   "@self.hdc.status": () => ({ busy: false, job: null }),
   "@self.hdc.tool": () => ({
     available: true,
diff --git a/tools/harmony-ui.test.mjs b/tools/harmony-ui.test.mjs
index ba06382..5f61c1b 100644
--- a/tools/harmony-ui.test.mjs
+++ b/tools/harmony-ui.test.mjs
@@ -85,10 +85,10 @@ async function app(t) {
         if (model.screenError) throw model.screenError;
         model.screenActive = true;
         model.screenTarget = target;
-        return { active: true, target };
+        return { active: true, ready: true, target };
       }),
       handler("hdc.screenWindowStop", () => ({ active: (model.screenActive = false) })),
-      handler("hdc.screenWindowStatus", () => ({ active: model.screenActive, target: model.screenTarget, error: model.screenError })),
+      handler("hdc.screenWindowStatus", () => ({ active: model.screenActive, ready: model.screenActive, target: model.screenTarget, error: model.screenError })),
       handler("hdc.status", () => ({ busy: false, job: null })),
       handler("hdc.tool", () => ({
         available: model.hdcAvailable,
diff --git a/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.3.1-20260113.z.so b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.3.1-20260113.z.so
new file mode 100644
index 0000000..abd4110
Binary files /dev/null and b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.3.1-20260113.z.so differ
diff --git a/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.4-20260113.z.so b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.4-20260113.z.so
new file mode 100644
index 0000000..203590f
Binary files /dev/null and b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.4-20260113.z.so differ
diff --git a/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.5-20260313.z.so b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.5-20260313.z.so
new file mode 100644
index 0000000..25d03d6
Binary files /dev/null and b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.5-20260313.z.so differ
diff --git a/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.6-20260418.z.so b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.6-20260418.z.so
new file mode 100644
index 0000000..43d8e7b
Binary files /dev/null and b/vendor/harmony-connector/hypium/libscrcpy_server_unix_6.6-20260418.z.so differ
diff --git a/vendor/harmony-connector/hypium/provenance-26.json b/vendor/harmony-connector/hypium/provenance-26.json
index 92b77a5..ea69fee 100644
--- a/vendor/harmony-connector/hypium/provenance-26.json
+++ b/vendor/harmony-connector/hypium/provenance-26.json
@@ -15,6 +15,30 @@
       "member": "devicetest/res/recorder/libscrcpy_server_unix_6.6-20260629.z.so",
       "sha256": "b24231188ab0fffa84c2bd71cab6948c8ffad9d661c80301f32eaf580177ce8e",
       "modified": false
+    },
+    {
+      "file": "libscrcpy_server_unix_6.6-20260418.z.so",
+      "member": "devicetest/res/recorder/libscrcpy_server_unix_6.6-20260418.z.so",
+      "sha256": "98bbc964fef1c4d17b446ec717102b855d09224b23fc1872bf70e1f928d010dd",
+      "modified": false
+    },
+    {
+      "file": "libscrcpy_server_unix_6.5-20260313.z.so",
+      "member": "devicetest/res/recorder/libscrcpy_server_unix_6.5-20260313.z.so",
+      "sha256": "2c8f1ef94d581281bf8e86d54f5939af9b205d5db5aa2cfb27f2562215c87b0a",
+      "modified": false
+    },
+    {
+      "file": "libscrcpy_server_unix_6.4-20260113.z.so",
+      "member": "devicetest/res/recorder/libscrcpy_server_unix_6.4-20260113.z.so",
+      "sha256": "b698b41ae1351337eeea3dcc87bf0160552196d669ba321b4963c342fa5a47f4",
+      "modified": false
+    },
+    {
+      "file": "libscrcpy_server_unix_6.3.1-20260113.z.so",
+      "member": "devicetest/res/recorder/libscrcpy_server_unix_6.3.1-20260113.z.so",
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