I have 2 UV-5R's purchased on separate dates.  Chirp will upload from either radio but will not download the other radio.  The "oldest" 5R is firmware BFB307, the "newer" 5R is N5R2401.  How can I copy Chrip data from one to the other. The error msg is "Image is not supported by the radio".  Thanks in advance for any help. DavidKD4ZHI