Press and hold the on the TV (usually on the back or underside) while plugging it back in or powering it on.
If you have obtained the multi-part .rar files, you must first extract them on a computer to get a single file (usually Update.img or a .bin file). Use a USB flash drive formatted to FAT32 . Download TCL L40B2810FE FHD USB part1 rar
The direct link to download the firmware in the specific .rar or .zip format often resides on community-driven or regional support platforms, as the main TCL USA Support site frequently does not host direct public firmware downloads. Download Options Alternative Source: A matching firmware file titled " TCL L40B2810FE Press and hold the on the TV (usually