Erase the damaged partitions and write the clean, verified backup dump file to the eMMC.
: The firmware for this chassis is almost always a single file named install.img . hk.t.rt2831p738 firmware
You want help finding firmware for the hk.t.rt2831p738 device. If so, I can guide you to: Erase the damaged partitions and write the clean,
: Once you have downloaded the correct install.img file, simply copy it to the root directory of your USB drive. The root directory is the top-most folder of the drive, not inside any subfolders. not inside any subfolders.