: If any part of the multi-RAR set is missing or corrupted, the firmware file will not extract correctly.
: These are the model identifiers for the TV's mainboard. "PC821" typically refers to the specific hardware revision or chassis design. Download MS338 PC821 1920x1080 Samsung part4 rar
: Installing the incorrect firmware version for your specific board revision can permanently disable the hardware. : If any part of the multi-RAR set
: Format a USB drive to FAT32 and copy the firmware file to the root directory (not in a folder). : Installing the incorrect firmware version for your
: When replacing a mainboard, the firmware must match the specific screen (panel) resolution of the TV.
: With the TV off, insert the USB. Hold the power button on the TV and plug it in. The standby light should begin flashing rapidly, indicating the update is in progress. Do not turn off power during this time.