Are you trying to or just looking for a feature update ? How can I update the software of the TV? - TCL USA
: If your TV uses the Roku platform, you can download specific manual update files by entering your Hardware ID at tvupdate.roku.com . Verified Community Sources Download RTD2841 TCL UnionTV Firmware part04 rar
They will provide a specific .bin or .img file tailored to your hardware. Are you trying to or just looking for a feature update
: Technical guides like mojothemonkey2/TCL_Guide explain how to flash different firmware versions, including .img and .zip OTA files. including .img and .zip OTA files.