How To Sign APK

Downloaded APK sometimes got a problem to install, like "application not installed". There are 2 problems related to this:-

1. You need to uninstall the installed app first, means that you can't upgrade/update over existing.

2. Problem with cert/sign.

1. Copy the apk that you want to sign to "place-apk-here-for-signing".

2. Run "script.bat".

3. Choose 16 @ type "16" and Enter. Wait until the process finished, then you can copy back the apk to your device and install.

Download APK manager here, or here at XDA. Good luck!