I have found the same thing. The mic will not key to transmit on repeater channels above 30. I also cannot upload to memory spaces 8-14. I can add channels to the software but it will not write to the device in those spaces. I have returned my first radio for exchange and the second exhibits the same behavior. I am starting to believe there is a bug in the firmware on the radio. My response from support so far is to read the manual and download the software. I think I'm going to cut bait here and find another radio.