Firmware for these boards is typically distributed as a file inside a compressed .rar archive. Because these are generic "China Universal" boards, you won't find an official manufacturer's website. Instead, technicians rely on community forums:
Note: Do not turn off the power until the flashing stops and the TV reboots. Important: Entering the Service Menu
Frequently lists available firmware downloads for various universal boards. How to Install the USB Firmware
Firmware for these boards is typically distributed as a file inside a compressed .rar archive. Because these are generic "China Universal" boards, you won't find an official manufacturer's website. Instead, technicians rely on community forums:
Note: Do not turn off the power until the flashing stops and the TV reboots. Important: Entering the Service Menu
Frequently lists available firmware downloads for various universal boards. How to Install the USB Firmware