The TV should detect the file; select and wait for the process to complete (roughly 3–5 minutes). Method B: Hard Flash (If TV is stuck on logo or "No Power") Unplug the TV from the power source. Insert the USB drive into the TV.

Once the update is finished and the TV restarts, it is recommended to perform a to clear any old configuration data:

firmware, follow these steps to ensure a successful update. This firmware is typically used for 55-inch 4K UHD Smart TVs that utilize the CV638H-D50 mainboard. 1. Download the Firmware

: Do not turn off the power during this process, as it can permanently damage the mainboard. 4. Post-Installation Reset

: Use a tool like WinRAR or 7-Zip . Right-click on the first part and select "Extract Here" . This will automatically combine all parts into a single installation file (usually with a .bin or .img extension). 2. Prepare the USB Drive

: Copy the extracted .bin or .img file directly to the root directory of the USB drive. Do not place it inside any folders, or the TV may not recognize it. 3. Installation Guide

(or sometimes the CH+ button) on the TV cabinet, then plug the power cord back in.

Keep holding the button until the indicator light begins to flash or the update progress bar appears on the screen.