Mark - if you can get a memory file, does that mean you could also capture some serial traces of other software talking to the radio using something like portmon to start documenting the protocol and settings?
Dan, I know Mark has at least a good hardware background, not sure what his software capabilities are:
Yep, I know he does :)
Most of the other chinese radios are pretty sensitive to timing and do some weird things like sending a header and then sending a different one if the radio doesn't respond within a certain amount of time, which seems to be some sort of multi-model probe.
Depending on how similar it is to the other two I support, I may plead early defeat as debugging something like that remotely is likely to take a lot of my time that could be otherwise spent with the growing stack of todo items I have for chirp :)