Once rebooted, go to Display > Resolution . You should see 3840x2160 as an option. Select it. Go to Camera > Encode > Compression and change all channels to "H.265."
If you’re interested in legally modifying or repairing a device, I’d be happy to help you find official documentation, open-source alternatives, or manufacturer-authorized resources instead. Just let me know the device name and what you’re trying to achieve. nsfs160 4k patched