The MT6735 is resilient, but a failed OTA update or rooting attempt often corrupts the bootloader. Flashing the stock firmware is the only way to revive a hard-bricked device (no display, no charging LED, only detected as "MediaTek USB Port" in Device Manager).
If you are locked out of a device due to a forgotten pattern, PIN, or Google account verification (Factory Reset Protection/FRP), flashing a specific version of the MT6735 firmware can wipe the security settings, granting you access again. mt6735 flash file
: The initial code that runs when the device is powered on, managing the boot sequence. Why You Might Need to Flash Your Device The MT6735 is resilient, but a failed OTA