KenotronTV : Known for hosting specific USB software for Shivaki models.
Firmware for these specific mainboards is often hosted on technician forums such as: Download MT5510S PB802 SHIVAKI STV 32LED42S part2 rar
Installing the wrong firmware can permanently "brick" your TV. Always verify that the mainboard number ( TP.MT5510S.PB802 KenotronTV : Known for hosting specific USB software