If you need to adjust screen parameters after an update, you can often access the service menu by pressing Source followed by 2580 or Menu followed by 1147 on the remote.
You must download all parts (part01, part02, etc.) into the same folder before extracting. Download CV538H 3840x2160 BBK 50LEX 6027 part02 rar
Use a tool like WinRAR or 7-Zip . Right-click the first file ( part01.rar ) and select "Extract Here" to combine them into a single usable firmware image (usually an .bin or .img file). 📥 How to Install the Firmware If you need to adjust screen parameters after
The indicator light should begin to flash, signaling the update is in progress. Do not turn off the TV until the process completes. ⚠️ Important Warnings Download CV538H 3840x2160 BBK 50LEX 6027 part02 rar