Are you getting an or is it completely stuck on the logo ?
Before downloading, confirm the mainboard number in your TV (e.g., 40-MS6486-MAA2HG). Firmware for the 43S4900 is often listed under the mainboard number rather than the TV model number.
Searching for specific firmware parts like "part03.rar" for the TCL LED43S4900 Download TCL LED43S4900 Firmware part03 rar
These archives are typically split. You must download all parts (e.g., part01.rar, part02.rar, part03.rar) and place them in the same folder, then extract only the first part using tools like WinRAR or 7-Zip.
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. Are you getting an or is it completely stuck on the logo
(often S4900 series, FHD) usually requires accessing specialized firmware repositories rather than official TCL support pages, as these are older models.
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. Searching for specific firmware parts like "part03
Here are the proper steps and resources to locate this firmware file: