diff --git a/backend/server.js b/backend/server.js
index fec45ca..582658a 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -154,7 +154,8 @@ app.get('/api/firmware/:id/manifest', (req, res) => {
   const manifest = {
     name:    firmware.name,
     version: firmware.version,
-    new_install_prompt_erase: true,
+    new_install_prompt_erase:   true,
+    new_install_improv_wait_ms: 0,    // Improv WiFi 단계 건너뜀 → 완료 후 Close 버튼만 표시
     builds: [{
       chipFamily: firmware.chipFamily,
       parts: firmware.parts.map(p => ({