jailbreak
follow this
1/install itools ( windows )
or
2/install iFile ( with cydia repo cydia.xsellize.com
3/Open iFile or itools go to : /var/mobile/Library/Accounts
Delete: Accounts3.sqlite Accounts3.sqlite.shm Accounts3.sqlite.wal
4/Go to: /Var/Mobile/Library/ConfigurationProfile*s
Delete: ClientTruth.plist CloudConfigurationDetails.plist
5/Reboot
6/Done
follow this
1/install itools ( windows )
or
2/install iFile ( with cydia repo cydia.xsellize.com
3/Open iFile or itools go to : /var/mobile/Library/Accounts
Delete: Accounts3.sqlite Accounts3.sqlite.shm Accounts3.sqlite.wal
4/Go to: /Var/Mobile/Library/ConfigurationProfile*s
Delete: ClientTruth.plist CloudConfigurationDetails.plist
5/Reboot
6/Done