How to Sign APK File USING APK FILE SIGNER (ERROR APP NOT INSTALLED). HD

How to Sign APK File USING APK FILE SIGNER (ERROR APP NOT INSTALLED). APK FILE SIGNER WILL HELP YOU OUT TO SIGN YOU APK WHEN YOU HAVE MODDED IT. THE ERROR APP_NOT_INSTALLED_INVALID_CERTIFICATE. THIS HAPPEN WHEN YOU MOD AN APK AND DOES NOT SIGN IT. ALSO THE ERROR APP NOT INSTALLED WILL ALSO BE REMOVED BY APK FILE SIGNER. LINK TO APK FILE SIGNER https://www.RESERVEDRAJPUT.WEBS.COM YOU CAN ALSO MAKE YOUR OWN KEY STORE