Before starting, note that incorrect firmware or a failed update can brick your TV. Follow the steps carefully.
A: Go to the TV's settings menu, select "About," and then "System information" to check the current firmware version. Tcl 55c2us Firmware Update
For the 55C2US (2017–2019 model), updates are now rare – maybe once a year. Critical security updates may still appear. If you are on version V8-R41KT01-LF1V178 or higher, you are likely up-to-date. Before starting, note that incorrect firmware or a
: If an update is found, select OK to download. The TV will restart automatically once finished. How to update the software on an Android TV - TCL Support For the 55C2US (2017–2019 model), updates are now
Yes, but it’s not recommended. If you must, you’ll need an older firmware file and will have to perform a USB update with a factory reset. Downgrading can cause system instability.