Maintaining your TCL 50EP660 with the latest firmware is essential for keeping its 4K HDR performance smooth and ensuring compatibility with the newest streaming apps. As a 2019 model featuring a VA panel and 4K Ultra HD resolution, it originally shipped with Android 9.0 (Pie).
Copy the .zip file (do not extract it) to the root directory of the USB drive. Insert the USB into the TV's USB 2.0 port. Firmware TCL 50EP660
Go to . Method C: Recovery Flash (.img File) Maintaining your TCL 50EP660 with the latest firmware