[Note]
Make sure to back up the system file first, because we will introduce the use of tools to delete a password database file in the ipad4 system file, which may cause the cell phone to change.
[Ipad4 boot password Forgot solution tutorial]
1. Make sure that the itools tool on your computer is in the latest version. Then, learn to save it and install the itunes tool on your computer.
2. All are ready, after connecting to the computer on the Apple ipad, find "file system" in the left-side menu in itools and locate "/private/var/keychains/" in system file management /, in the keychains folder, we will see the keychain-2.db file first back up this file and put it in the computer.
3, copy to the computer back up, I can delete the keychain-2.db file in the Apple phone, and finally restart ipad4 our boot password will be canceled, you do not need to enter a password or something directly in the system.