diff --git a/openflare_agent/internal/updater/restart_unix.go b/openflare_agent/internal/updater/restart_unix.go
index 16350a7e..173af72b 100644
--- a/openflare_agent/internal/updater/restart_unix.go
+++ b/openflare_agent/internal/updater/restart_unix.go
@@ -11,30 +11,26 @@ import (
 
 func replaceAndRestart(execPath string, tmpPath string) error {
 	backupPath := execPath + ".bak"
-	err := os.Remove(backupPath)
-	if err != nil {
-		slog.Error("remove backup binary failed", "path", backupPath, "error", err)
+	if err := removeBackupBinary(backupPath); err != nil {
 		return err
 	}
 	if err := os.Rename(execPath, backupPath); err != nil {
-		err := os.Remove(tmpPath)
-		if err != nil {
+		renameErr := err
+		if err := os.Remove(tmpPath); err != nil && !os.IsNotExist(err) {
 			slog.Error("remove tmp binary failed", "path", tmpPath, "error", err)
-			return err
+			return fmt.Errorf("backup current binary: %w; remove tmp binary: %v", renameErr, err)
 		}
-		return fmt.Errorf("backup current binary: %w", err)
+		return fmt.Errorf("backup current binary: %w", renameErr)
 	}
 	if err := os.Rename(tmpPath, execPath); err != nil {
-		err := os.Rename(backupPath, execPath)
-		if err != nil {
+		replaceErr := err
+		if err := os.Rename(backupPath, execPath); err != nil {
 			slog.Error("restore backup binary failed", "path", backupPath, "error", err)
-			return err
+			return fmt.Errorf("replace binary: %w; restore backup binary: %v", replaceErr, err)
 		}
-		return fmt.Errorf("replace binary: %w", err)
+		return fmt.Errorf("replace binary: %w", replaceErr)
 	}
-	err = os.Remove(backupPath)
-	if err != nil {
-		slog.Error("remove backup binary failed", "path", backupPath, "error", err)
+	if err := removeBackupBinary(backupPath); err != nil {
 		return err
 	}
 	if err := syscall.Exec(execPath, os.Args, os.Environ()); err != nil {
@@ -42,3 +38,14 @@ func replaceAndRestart(execPath string, tmpPath string) error {
 	}
 	return fmt.Errorf("unreachable after exec")
 }
+
+func removeBackupBinary(path string) error {
+	if err := os.Remove(path); err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		slog.Error("remove backup binary failed", "path", path, "error", err)
+		return err
+	}
+	return nil
+}
diff --git a/openflare_agent/internal/updater/restart_unix_test.go b/openflare_agent/internal/updater/restart_unix_test.go
new file mode 100644
index 00000000..a984346a
--- /dev/null
+++ b/openflare_agent/internal/updater/restart_unix_test.go
@@ -0,0 +1,15 @@
+//go:build !windows
+
+package updater
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+func TestRemoveBackupBinaryIgnoresMissingFile(t *testing.T) {
+	backupPath := filepath.Join(t.TempDir(), "openflare-agent.bak")
+	if err := removeBackupBinary(backupPath); err != nil {
+		t.Fatalf("expected missing backup cleanup to be ignored: %v", err)
+	}
+}
diff --git a/openflare_server/web/components/layout/dashboard-topbar.tsx b/openflare_server/web/components/layout/dashboard-topbar.tsx
index 8987308f..d05b95a6 100644
--- a/openflare_server/web/components/layout/dashboard-topbar.tsx
+++ b/openflare_server/web/components/layout/dashboard-topbar.tsx
@@ -1,7 +1,7 @@
 'use client';
 
 import { useMutation, useQuery } from '@tanstack/react-query';
-import { useEffect, useRef, useState } from 'react';
+import { useCallback, useEffect, useRef, useState } from 'react';
 import { useRouter } from 'next/navigation';
 
 import { useAuth } from '@/components/providers/auth-provider';
@@ -53,6 +53,9 @@ export function DashboardTopbar() {
   const [upgradeStream, setUpgradeStream] =
     useState<UpgradeStreamSnapshot | null>(null);
   const menuRef = useRef<HTMLDivElement | null>(null);
+  const upgradeRefreshPendingRef = useRef(false);
+  const upgradeReloadStartedRef = useRef(false);
+  const upgradeReloadTimerRef = useRef<number | null>(null);
   const isRoot = (user?.role ?? 0) >= 100;
   const upgradeStatusPollInterval = 3000;
 
@@ -90,6 +93,7 @@ export function DashboardTopbar() {
   const upgradeMutation = useMutation({
     mutationFn: (channel: ReleaseChannel) => upgradeServer(channel),
     onSuccess: (release) => {
+      upgradeRefreshPendingRef.current = true;
       setUploadedBinary(null);
       setManualUpgradeStatus(null);
       setManualUpgradeError(null);
@@ -133,6 +137,7 @@ export function DashboardTopbar() {
   const confirmManualUpgradeMutation = useMutation({
     mutationFn: confirmManualServerUpgrade,
     onSuccess: (candidate) => {
+      upgradeRefreshPendingRef.current = true;
       setVersionFeedback(null);
       setManualUpgradeError(null);
       setUploadedBinary(candidate);
@@ -152,6 +157,40 @@ export function DashboardTopbar() {
     },
   });
 
+  const scheduleUpgradePageReload = useCallback(() => {
+    if (upgradeReloadStartedRef.current) {
+      return;
+    }
+
+    upgradeReloadStartedRef.current = true;
+    setVersionFeedback('服务升级已进入重启阶段，页面将在服务恢复后自动刷新。');
+
+    const reloadWhenServerReady = async () => {
+      try {
+        await getPublicStatus();
+        window.location.reload();
+      } catch {
+        upgradeReloadTimerRef.current = window.setTimeout(
+          reloadWhenServerReady,
+          1500,
+        );
+      }
+    };
+
+    upgradeReloadTimerRef.current = window.setTimeout(
+      reloadWhenServerReady,
+      1200,
+    );
+  }, []);
+
+  useEffect(() => {
+    return () => {
+      if (upgradeReloadTimerRef.current !== null) {
+        window.clearTimeout(upgradeReloadTimerRef.current);
+      }
+    };
+  }, []);
+
   useEffect(() => {
     if (!isVersionModalOpen || !isRoot) {
       setUpgradeStream(null);
@@ -175,14 +214,28 @@ export function DashboardTopbar() {
       socket.onmessage = (event) => {
         const snapshot = parseUpgradeStreamSnapshot(String(event.data));
         if (snapshot) {
+          if (
+            snapshot.in_progress ||
+            snapshot.upgrade_status === 'succeeded'
+          ) {
+            upgradeRefreshPendingRef.current = true;
+          }
+          if (snapshot.upgrade_status === 'failed') {
+            upgradeRefreshPendingRef.current = false;
+          }
           setUpgradeStream(snapshot);
         }
       };
 
       socket.onclose = () => {
-        if (!closed) {
-          reconnectTimer = window.setTimeout(connect, 1500);
+        if (closed) {
+          return;
         }
+        if (upgradeRefreshPendingRef.current) {
+          scheduleUpgradePageReload();
+          return;
+        }
+        reconnectTimer = window.setTimeout(connect, 1500);
       };
     };
 
@@ -195,7 +248,7 @@ export function DashboardTopbar() {
       }
       socket?.close();
     };
-  }, [isRoot, isVersionModalOpen]);
+  }, [isRoot, isVersionModalOpen, scheduleUpgradePageReload]);
 
   useEffect(() => {
     if (!isUserMenuOpen) {