diff --git a/app/src/main/java/com/medithings/vesiscan/firmware/ui/FirmwareUpdateView.kt b/app/src/main/java/com/medithings/vesiscan/firmware/ui/FirmwareUpdateView.kt
index 51a7a5a..d4d8730 100644
--- a/app/src/main/java/com/medithings/vesiscan/firmware/ui/FirmwareUpdateView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/firmware/ui/FirmwareUpdateView.kt
@@ -91,6 +91,11 @@ fun FirmwareUpdateScreen(onBack: () -> Unit, modifier: Modifier = Modifier) {
     ) { result -> granted = result.values.all { it } }
 
     LaunchedEffect(Unit) {
+        // 진입 시 메인 앱 BLE 연결 해제 — 프로브가 연결 중이면 광고 중단되어
+        // DfuManager 스캔에서 안 보이는 문제 해결 (2026-08-03).
+        runCatching {
+            com.medithings.vesiscan.ble.BleManager.getInstance(context).disconnect()
+        }
         manager.loadFirmware()
         if (!granted) launcher.launch(perms)
     }