on Android 5.1 or higher, you may be required to wait 24 hours after a password change before you can perform a factory reset. Addressing "Cracked" or Modified Versions You may see "cracked" or modified APKs online. It is critically important to exercise caution: Security Risks
Understanding Google Account Manager 5.1-1743759 for Android 5.0 google+account+manager+511743759+android+50+cracked
The Google Account Manager (5.1.1.743759) is a system app responsible for managing authentication. on Android 5