Open the back of the TV and verify that the board printed number is exactly CV960XH-A50 .
Ensure the firmware is for the 3840x2160 resolution. Flashing a 2K (1080p) file onto a 4K panel will cause a boot loop.
Right-click and select "Extract Here" using WinRAR or 7-Zip. Download CV960XH A50 3840x2160 Magic55 Update part20 rar
Once extracted, the file is usually named allupgrade_V960...bin . Do not rename it unless the specific instructions for your TV model say otherwise. The Update Process Turn off the TV and unplug it from the wall.
Flashing the wrong firmware can "brick" your motherboard, turning your TV into a very expensive paperweight. Open the back of the TV and verify
The LVDS or V-by-One cable configuration must match, or you risk a "flipped" image or solarized colors.
If you are still searching for the link to Part 20, check these primary repositories: Right-click and select "Extract Here" using WinRAR or 7-Zip
The software will automatically pull data from all 20 parts to create one single .bin or .pkg file. Where to Find the Download