If the image appears distorted after flashing, you may have used a 1080p firmware version instead of the required 3840x2160 build.
If you're still having trouble finding the exact file, you can check the Official Aconatic Support Page for the latest manual and software releases. Download MS638 PC822 3840x2160 Aconatic 49DSU800 part1 rar
stuck on the logo screen or acting sluggish? Often, these issues stem from corrupted system software on the MS638 PC822 If the image appears distorted after flashing, you
Completely unplug your Aconatic TV from the power source. Download MS638 PC822 3840x2160 Aconatic 49DSU800 part1 rar