While it’s tempting to ignore that "Update Available" notification, firmware updates for the typically address:
A power loss during manual firmware update can brick your TV. Use an uninterruptible power supply (UPS) if possible. Firmware TCL 50EP660
The firmware for the TCL 50EP660 (an Android TV model) significantly impacts its usability, ranging from essential security patches to potential performance slowdowns depending on the version. Firmware Performance Review The 50EP660 originally shipped with and was slated for updates up to Android 11 FlatpanelsHD Visual Enhancements While it’s tempting to ignore that "Update Available"
If a "Service Update" is available, run that after the main system update to ensure TV tuner features are also current. Method B: USB Local Update (The Advanced Way) you can perform a "Local Update."
You might see files labeled V8-R851T02-LF1VXXX-test .
If your TV is stuck on an old version or the network update fails, you can perform a "Local Update."