Press and hold the on the TV (not the remote).
Many users find these specific files on the TCL Firmware Telegram Channel or XDA Developers. Download S586T02 LF1V628 part03 rar
Navigate to > System (or Device Preferences ) > About > System Update . Select Local Update if available. Force Update (Hard Reset) Method: Unplug the TV from power. Insert the USB drive. Press and hold the on the TV (not the remote)
Use a tool like WinRAR or 7-Zip to extract part01 ; this will automatically merge and extract all parts (including part03) into a single .pkg or .bin file. Select Local Update if available
Using incorrect firmware or losing power during the update can permanently damage your TV. It is often safer to use the Network Update option in your TV's settings to download official updates directly from TCL.
Plug the TV back in while continuing to hold the button until the "Upgrading" screen appears.
If you have already downloaded all parts of the archive, follow these steps to install the update via USB:
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