Mt6731 Flash: File

However, like all electronic devices, those running on the MT6731 are prone to software issues: boot loops, IMEI corruption, FRP (Factory Reset Protection) locks, malware, and the dreaded "hard brick." When these problems occur, the (also known as the Stock ROM or firmware) becomes the ultimate lifesaver.

Returning a modified phone back to its original factory state. mt6731 flash file