Procedure
1. Buksan unit sa likod
2. Disconnect battery
3. Open MRT
4. Select vivo 71
5. Select format
6. Testpoint
7. Saksak USB cable
8. START
9. Wait done
1. Buksan unit sa likod
2. Disconnect battery
3. Open MRT
4. Select vivo 71
5. Select format
6. Testpoint
7. Saksak USB cable
8. START
9. Wait done