How to factory reset IRBIS SP454? How to wipe all data in IRBIS SP454? How to bypass screen lock in IRBIS SP454? How to restore defaults in IRBIS SP454?
The following tutorial shows all method of master reset IRBIS SP454. Check out how to accomplish hard reset by hardware keys and Android 7.0 Nougat settings. As a result your IRBIS SP454 will be as new and your MediaTek MT6580M core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.