: Ensure the file name specifically mentions CV628H-A50 , the resolution 1920x1080 , and ideally the panel type (e.g., Sony). Using the wrong resolution or board version can "brick" your TV or cause a distorted display. 2. Prepare the USB Drive
: Plug the prepared drive into the USB 2.0 port (avoid Blue USB 3.0 ports for flashing). Download CV628H A50 1920x1080 Sony USB part1 rar
: While holding the button, plug the TV back into the outlet. : Ensure the file name specifically mentions CV628H-A50
: Press and hold the physical Power button on the TV cabinet (not the remote). the resolution 1920x1080
: If the firmware is split into parts (e.g., part1.rar , part2.rar ), download all of them into the same folder on your PC.