Firmware updates for TCL TVs with the V8-S68AT02 chipset are frequently hosted on tech support sites and forums dedicated to TV repair, such as .
for the 198 firmware if I search specific firmware forums. Download S68AT02 LF1V198 part03 rar
It is not a part of a multipart .rar archive, but rather a large .bin firmware update file. Firmware updates for TCL TVs with the V8-S68AT02
Note: A similar, slightly older version (V8-S68AT02-LF1V182.bin) was previously provided officially by TCL Thailand on Dropbox for similar TV series. Download the .bin firmware file from a reputable source. Format a USB flash drive to FAT32 . Note: A similar, slightly older version (V8-S68AT02-LF1V182
for a specific TV model (e.g., Q7700). TCL Electronics - Facebook
the physical power button on the TV and plug the power back in. Release the button when the upgrade screen appears.
the downloaded file (e.g., V8-S68AT02-LF1V198.bin ) directly to the root of the USB drive.