Because you are downloading a "part3.rar," ensure you have all other parts (part1, part2, etc.) in the same folder before extracting. You can find official update instructions on the TCL Support Page .
This firmware often targets the underlying operating system to reduce lag during menu navigation and app switching. Download NT67F02 LF1V614 part3 rar
Recent firmware versions have introduced "Super Resolution" to boost the quality of non-4K content, making lower-resolution streams look sharper. Picture & Display Quality Because you are downloading a "part3
Improvements to the right-side quick panel for easier access to brightness and network settings without leaving your current app. Security & Maintenance Refines how the TV handles HDR10 and Dolby
Reduces video fragmentation and image errors when "Image Smoothness" settings are set to higher levels.
Refines how the TV handles HDR10 and Dolby Vision content, specifically reducing "tearing" or artifacts in high-resolution YouTube HDR videos.