: Place the extracted firmware file (usually named allupgrade_ms338_2G_ref... or similar .bin file) onto the root directory of the USB drive—do not put it in a folder. Insert & Power On : Disconnect the TV from the power outlet. Insert the USB stick into the TV's USB port.
If your download is in multiple parts (e.g., part1.rar ), ensure all parts are in the same folder before extracting. Follow these steps to flash the firmware via USB: Download MS338 PB803 1366x768 AKAI part1 rar
: Hold the button for about 5 seconds until the standby light begins to blink, indicating the update has started. Do not unplug the TV during this process. : Place the extracted firmware file (usually named
, is a common Chinese LED/LCD mainboard used by brands like AKAI, Telefunken, and DEXP. 1. Firmware Download Insert the USB stick into the TV's USB port