If the TV will not boot to Android, you will need the "IMG" (image) file , not the OTA (ZIP) file.

Like any other software, the firmware of the TCL L43S6500 can sometimes experience issues. Some common problems include:

The TCL L43S6500 is a popular 43-inch AI Smart Android TV. It delivers great value, but software glitches can occur over time. App crashes, boot loops, slow performance, and Wi-Fi drops are common. Updating or reinstalling the firmware resolves these issues. This comprehensive guide covers everything about the TCL L43S6500 firmware. Understanding TCL L43S6500 Specifications and Firmware

In these cases, you need to flash the firmware manually using the (full installation) file, not the smaller OTA ZIP file.

Corrects localized issues such as Wi-Fi disconnecting, Bluetooth audio lag, or unresponsive HDMI ports.