If you are searching for you are likely looking for the specific firmware or software update files required to repair a 55-inch 4K LED TV. The TP.HV553.PC821
Typically, the firmware is copied to a FAT32-formatted USB drive, which is then inserted into the TV's USB port while holding the power button to trigger the update.
Restoring Your 4K Smart TV: A Guide to the TP.HV553.PC821 Go to product viewer dialog for this item.