This works for 90% of TCL models. You need a USB 2.0 drive (4GB to 16GB) formatted to FAT32.
This is the gold standard for Android TV firmware. Download Tcl Firmware For All Models
To download the correct TCL firmware, you need the exact model number (e.g., 55C825, 65R635, 43S434). Find it in three places: This works for 90% of TCL models
Example Model Breakdown:
Write down this number before proceeding. Original box or receipt
Before downloading any firmware, locate the exact model number and platform ID.
⚠️ Warning: Installing firmware for a wrong model or incorrect hardware platform will permanently damage the device (No display / boot loop). Warranty will be voided.