Download this Tecno T420 firmware flash file (stock ROM) to unbrick your device and put it back to the way it was when it left the factory. If you previously rooted or modified the system partition in any way, flashing this stock ROM will overwrite all existing modified system files to replace them with factory software.
Ensure to backup all valuable data on the phone, like contacts, messages, app data, etc. This is usually a necessary step before flashing or resetting your smartphone or tablet. After this process is complete, all data on the device is completely lost.
Again, ensure to charge the phone to at least 30% so the flashing process is not interrupted by low battery. Interrupting the firmware installation process could result in a dead device.
Follow the recommended flashing steps right after the download options. You can get the firmware file from the link below. Please report any broken links you discover.
Download Tecno T420 stock firmware
Size: 3 MB
Important! Always backup existing firmware before flashing any other firmware.
How to flash
To flash this factory-signed firmware, download and flash it with Tecno Flashtool (Download here). Flashing with another tool might result in errors, and flashing will fill. Extract the contents of the firmware archive and flash with a non-faulty USB cable.
If you have any questions or other contributions, please post them in the comments section for assistance. See other tecno stock firmware here.