diff --git a/apps/desktop/src/components/desktop-install-overlay.tsx b/apps/desktop/src/components/desktop-install-overlay.tsx
index 0213a93b7d2..0341dc5675f 100644
--- a/apps/desktop/src/components/desktop-install-overlay.tsx
+++ b/apps/desktop/src/components/desktop-install-overlay.tsx
@@ -407,7 +407,11 @@ export function DesktopInstallOverlay({ enabled = true }: DesktopInstallOverlayP
 
   const totalCount = stages.length
   const failed = Boolean(state.error)
-  const progressPct = totalCount > 0 ? Math.round((completedCount / totalCount) * 100) : 0
+  // Count the running stage as half-done so the bar advances *during* a long
+  // stage instead of sitting frozen at the last completed step while its logs
+  // stream (e.g. "0 of 2" pinned at 0% for the whole first stage).
+  const progressUnits = completedCount + (!failed && currentStage ? 0.5 : 0)
+  const progressPct = totalCount > 0 ? Math.round((progressUnits / totalCount) * 100) : 0
   const currentStartedAt = currentStage ? state.stages[currentStage]?.startedAt : null
   const currentElapsed = typeof currentStartedAt === 'number' ? formatElapsed(now - currentStartedAt) : ''
 
diff --git a/apps/desktop/src/store/updates.ts b/apps/desktop/src/store/updates.ts
index 6b6aae9bea1..3297b6e9a90 100644
--- a/apps/desktop/src/store/updates.ts
+++ b/apps/desktop/src/store/updates.ts
@@ -531,7 +531,9 @@ function ingestProgress(payload: DesktopUpdateProgress): void {
     applying: !terminal,
     stage: payload.stage,
     message: payload.message,
-    percent: payload.percent,
+    // Streamed log lines carry percent: null; keep the last milestone percent
+    // (10/60/…) instead of resetting the bar to indeterminate on every line.
+    percent: payload.percent ?? current.percent,
     error: payload.error,
     // 'manual' carries the command to run in its message field.
     command: payload.stage === 'manual' ? payload.message : current.command,