: Press and hold the physical Power button on the TV (not the remote) while plugging the TV back in. Continue holding for ~10 seconds until the "Upgrading" screen appears.
: The TV will restart automatically once the process is finished, which usually takes about 4–10 minutes. Important Precautions Software Upgrade - TCL USA
: .7z (a high-compression archive that must be extracted to retrieve the .bin or .img firmware file). Download File TCL V386 (CHASSIS MS6586).7z
: Turn off the TV and unplug it from the power source.
Copy this file directly to the (not inside any folder) of the USB drive. Flash the Firmware : : Press and hold the physical Power button
: MS6586 (This is a critical identifier for compatibility). Software Version : V386 (A specific build iteration). Platform : Android-based system (likely Android 9 Pie).
To install this firmware manually, you typically need a formatted USB flash drive and access to the TV's service settings. : Format a USB drive to FAT32 . Important Precautions Software Upgrade - TCL USA :
: Plug the drive into the USB 2.0 port on the side of the TV.