Downloading and installing firmware for the TCL L40D2900 (often using the mainboard TP.MS1306.PB775) is typically done via a USB update, as this model may not receive over-the-air updates. 1. Preparation Confirm your TV uses the TP.MS1306.PB775 board, as firmwares are specific to this.
Are you doing this to or just to upgrade ? Download TCL L40D2900 Software rar
Keep holding the button until the screen shows a "Software Updating" message or the standby light flashes quickly. You can now release the button. Downloading and installing firmware for the TCL L40D2900
The TV will automatically restart when the update is complete. Do not turn off power during this process. Important Notes Are you doing this to or just to upgrade
If the downloaded file is a .rar file, you must unpack it using software like WinRAR on a computer to obtain the .bin firmware file.
Use a USB drive (2GB–16GB recommended) formatted strictly to FAT32 .