Ensure the firmware is for your exact board and panel version, as incorrect firmware can lead to a "bricked" (non-functional) television. To help me narrow down the exact file, could you tell me: What is the Mainboard Model Number (e.g., 40-MS6486...)?
The resulting extracted file is usually named V8-MS6486xxx.pkg or similar. Place this file in the root directory of a FAT32-formatted USB drive, plug it into the TV, and initiate the update by plugging in the TV while holding the power button. Download TCL LED43S4900 Firmware part03 rar
Websites like Remont-Aud.net or 4PDA often host split RAR firmware files for TCL models. You will need to search for "TCL LED43S4900 firmware" or "MS6486" (the common mainboard chassis for this model) to find all parts (Part 1, Part 2, Part 3, etc.) in the same thread. Ensure the firmware is for your exact board
Searching for specific firmware parts like "part03.rar" for the TCL LED43S4900 Place this file in the root directory of
Are you getting an or is it completely stuck on the logo ?