diff --git a/app/src/main/java/com/ingchips/fota/UpdatePackage.java b/app/src/main/java/com/ingchips/fota/UpdatePackage.java
index 651490b..fe41040 100644
--- a/app/src/main/java/com/ingchips/fota/UpdatePackage.java
+++ b/app/src/main/java/com/ingchips/fota/UpdatePackage.java
@@ -99,7 +99,6 @@ private boolean LoadFromStream0(InputStream stream) {
             r = true;
         } catch (Exception e)  {
             r = false;
-            System.out.println(e);
         }
 
         return r;
diff --git a/app/src/main/java/com/ingchips/fota/Updater.kt b/app/src/main/java/com/ingchips/fota/Updater.kt
index 7aeab40..367b695 100644
--- a/app/src/main/java/com/ingchips/fota/Updater.kt
+++ b/app/src/main/java/com/ingchips/fota/Updater.kt
@@ -230,7 +230,6 @@ class Updater
             return
         }
         mtu = BLEUtil.requestMtu(gatt!!,512) - 3
-        Log.i("TAG", "prepare0: mtu: $mtu")
 
         BLEUtil.discover(gatt!!)