[Download] AT&T’s HTC HD7S Gets Windows Phone 7.5 Mango Update
Microsoft has started rolling out the Windows Phone 7.5 Mango update for the AT&T branded HTC HD7S users. You will be needed Zune software in order to upgrade your handset with Mango flavor. Download the Zune client for PC & MAC from here and follow the instructions provided here to pull the Mango update from the servers.