If you’ve purchased an HTC TouchPro2 via the open channel market in Australia then you can get the official update to Windows Mobile 6.5 for this phone.
Click on this link http://www.htc.com/au/SupportViewNews.aspx?dl_id=790&news_id=393 and follow the instructions that HTC provide.
Q:How do I know if my phone is open channel?
A: If your phone does not have any Telstra logo/branding on it (check the back cover) then it’s open channel.
DonK