You can download the firmware and eMMC dump files for the motherboard with 1920x1080 resolution from several specialized firmware repositories. Primary Download Sources
: A technical forum that provides an eMMC dump for the Kodama 50M38 which uses the same chassis (TP.MS338.PC821) and resolution. TP.MS338.PC821 eMMC Dump - KenotronTV Installation Tips Download MS338 PC821 1920x1080 NIKAI EMMC part3 rar
: For USB-updatable versions, copy the .bin file to the root of a FAT32-formatted USB drive, plug it into the TV, and power it on while holding the power button (or via the system menu). You can download the firmware and eMMC dump
: To access the service settings on this board, use the remote code Menu + 1147 . plug it into the TV