Hello. until recently I have been unable to program the baofeng UV-5R to communicate with CPD frequencies. Does anyone know of any changes to the system would would prevent communication that occurred in about the last month? I read that the system has transitioning to 800MHZ, and although I really don't what that means, it may be what's creating my problem. I use use CHIRP and upload an .IMG file with the frequencies for the different channels we use. Also, I receive an error stating: UPLOAD FINISHED, BUT THE 'OTHER SETTINGS' COULD NOT BE SENT BECAUSE THE FIRMWARE VERSION OF THE IMAGE (BFS311 BSF297) DOES NOT MATCH THAT O THE RADIO (N5R-20 BFB297 ).I apologize if my problem may be confusing as i am not familiar with the terminology or technology of what I'm attempting to trouble shoot. I cannot hear or transmit on any of the channels. i really appreciate any advice. Thank you.