well, we finally got our hands on a real imagio device allowing us to troubleshoot the issues and now the SIM unlocker works
I'm quoting Olipro from XDA:
HTC Imagio SIM Unlocker (yeah yeah, it also does CID and SECURITY) sorted, enjoy the usual boilerplate text:
1) contributing XDA-DEV forum members & Elite Team donators...
Request a free unlock with your
IMEI & email. - if you have an account that has a) existed for a good few months and b) you actually contribute to the site (technical wizardy, or general helpfulness - CONSISTENT AND REGULAR POSTING), then just leave a message and it's yours, if you don't meet both a) and b) then don't bother - having an account that you rarely posted from is NOT in the least bit interesting.
PLEASE CONTACT CMONEX, NOT ME and don't use PM, use above link!!
2) everyone else (new accounts/unregistered/sod all posts, this means you):
Get SIM unlocked Here