Press and hold the on the TV (not the remote) while plugging the TV back in.
: Use the TCL Product Download Tool and enter your TV's specific model number.
: Use a USB 2.0 drive formatted to FAT32 . Download MT56552 LF1V339 part02 rar
While community sites like Telegram channels often host these specific chassis-based files, it is safer to check official channels:
The file is a specific firmware part for TCL Smart TVs (often associated with the MS08B chassis). Because this is a multi-part archive, you must download all parts (e.g., part01, part02, etc.) and keep them in the same folder before extracting . How to Install Firmware (USB Method) Press and hold the on the TV (not
: Move the extracted firmware file (e.g., Update.img ) directly to the root directory of your USB drive (not inside any folders). Flashing the TV : Power off the TV and unplug it from the wall. Insert the USB drive into the TV's USB port.
: Once the progress bar hits 100%, the TV will restart automatically. Do not remove the USB drive until the TV has fully rebooted into the home screen. Finding Official Downloads While community sites like Telegram channels often host
: If your TV can still boot, go to Settings > Device Preferences > About > System Update to check for the latest official software over the network.