Based on user reports for similar TCL firmware updates (such as V583), these updates are generally highly recommended over factory-installed versions like V509.
Firmware updates are generally safe, but any interruption (like a power loss) during the installation process can permanently damage your TV.
Use a tool like WinRAR or 7-Zip to open part1.rar only; it will automatically pull data from the other parts to create a single folder. Download NT67F02 LF1V614 part1 rar
The file is a segment of a firmware dump or backup file for TCL V8 smart TVs . Because this is a multi-part archive, you must download all subsequent parts (e.g., part2, part3) to extract the functional firmware. Review of Firmware V614
Users report that newer firmware versions significantly improve overall UI responsiveness, often described as "night and day" differences. Based on user reports for similar TCL firmware
Insert the USB into the TV and follow the system update prompts in your TV's settings menu.
Copy the extracted file (usually a .pkg or .bin file) onto a FAT32-formatted USB drive. The file is a segment of a firmware
While the manual USB update process is effective, users note that TCL's lack of consistent Over-The-Air (OTA) updates for all regions can make the process tedious. How to Use the Downloaded File