You don't want to flash firmware every month. Here is how to keep your TCL 20E stable:
Limitation: This only works for official, signed OTA packages. It cannot downgrade Android versions.
While holding those keys, insert the USB cable into the device port.
You will need a reliable Windows PC and an original, undamaged USB data cable to ensure a stable connection during the transfer process. Required Tools and Downloads
Only download firmware files from reputable sources, official TCL forums, or recognized developer communities like XDA Developers. Methods to Update or Restore TCL 20E Firmware
If you want to proceed with the firmware installation, tell me: