This is cross-posted from the Amateur Radio Equipment forum for the benefit of users who haven't looked there:
I see a number of requests both here and on the budget transceivers forum re questions about CHIRP.
If no one answers here, it has its own dedicated mailing list, and I'm sure the developers are over there, not here. Here's the link -
chirp_users Info Page
There are also archives that you can search without being a member of the list. Might be another source of information if you are having an issue with a specific radio.