Multi-part RAR files are designed to be "stitched" together during extraction.
Are you currently seeing a when trying to extract the files or during the TV installation? How to Perform a Manual Update on TCL Google TV's Download T658T01 LF1V551 Update part1 rar
The TV will scan the USB, verify the version, and prompt you to install. Select . Method B: Force Flash (If TV is Stuck/Boot-Looping) Multi-part RAR files are designed to be "stitched"
Press and on the TV (not the remote). While holding the button, plug the power cord back in . verify the version