I read something about there being diffrent versions which require separate programming software.
I think it was on the Baeofeng USA website.

Jock  KC6IIH




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  JOCK  KC6IIH

Michael Collinson <training@bigpond.net.au> wrote:
I have had success using both CHIRP and Baofeng software in downloading and uploading from a Baofeng UV-5R,  Version BFB 251 120702 VER-05 which belongs to a mate.
However, my own model UV-5R, Version BFB 291 120828N B5R0001 does not respond. Any suggestions?
Regards,
 
Mike