diff --git a/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt b/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
index 07090c6..da70d7b 100644
--- a/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
+++ b/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
@@ -721,6 +721,8 @@ class BleManager private constructor(private val context: Context) {
                             startBatteryPolling()
                             startWatchdog()
                             sendDeviceInfoQuery()
+                            // avg=3으로 복원 (이전 mcs avg=10이 기기에 남아있을 수 있음)
+                            sendRaw(CRC16.buildCommandBE("mcs", intArrayOf(2, 5, 3, 20, 140)))
                             logd { "Service ready! (CCCD written)" }
                         }
                     } else {