How to factory reset IRBIS SP493? How to wipe all data in IRBIS SP493? How to bypass screen lock in IRBIS SP493? How to restore defaults in IRBIS SP493?
The following tutorial shows all method of master reset IRBIS SP493. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your IRBIS SP493 will be as new and your MediaTek MT6580M core will run faster.
Hard Reset Irbis SP455 - video
Hard Reset will erase all of your data
All described operations you are doing at your own risk.