There is an occasional radio that is difficult to program because of the physical design of the unit (especially the speaker/mic jack and its cover). I offer the following for those of you who have purchased this radio. This is all the help we can offer. RT Systems does not support this radio for programming.
If you want to use the BAO-5R program with the USB-K4Y cable, it will work... if you can overcome the physical characteristics of the radio. Be ready for lots of failures reading and writing the radio unless you have really strong hands and can push that connection tightly into the mic jack on the side of the radio. Be sure you don't press the PTT in your attempts to squeeze the radio. The radio can't be programmed and transmit at the same time. The "Wrong response from radio" error indicates that you don't have plug securely in the mic jack.