: In some cases, renaming the file to allupgrade_v56_pb801.bin (or similar) and placing it on a FAT32-formatted USB drive can trigger an auto-update when the TV is powered on.
: Download the .rar or .zip file and extract the .bin firmware file. : In some cases, renaming the file to allupgrade_v56_pb801
: Most technicians use a hardware programmer like the RT809F or CH341A to flash the file directly onto the SPI Flash IC (usually an 8-pin chip like the 25Q32 or 25Q64). : In some cases
: Restore a TV stuck on a logo or in standby mode. : In some cases, renaming the file to allupgrade_v56_pb801