Press and hold the [Power] and [Volume+] keys 10 second.
After entering the recovery mode, use [Volume+] and [Volume-] to move the cursor.
Wipe again for 2 times.
Select erase data/restore factory settings > yes, [home] to confirm.
Select erase cache partition > yes, and [home] to confirm.
Select restart system now > Yes, and [Home] to confirm.
Restart after this operation is completed, that is, complete.
If the problem is not solved after two wipes,
It is recommended to press and hold the [Power] and [Volume+] keys 10 second to enter the download mode.
Connect PC, Odin brushes its official Rom repair system.