Any one know how to make a backup of the firmware (not the configuration) on the Quansheng UV-K6 series of radios?
I'm bought a UV-K5(99) which I think has custom firmware on it. Maybe from the seller, it doesn't quite work (a couple of weird glitches)- but it would be nice to know what it was based on before I flash an official firmware to it. And have the original firmware as a backup.
I'm also curious about the UV-5R Plus firmware