Can’t wait for Microsoft to release Windows Phone 7′s Mango update? The company has finalized its work on the software and prepared a build of the code for release to its manufacturing partners. As they work on preparing their new Mango-running WP7 smartphones, we can also expect carriers to start testing software updates due to bring existing WP7 hardware up to Mango. If the weeks and weeks you’d have to wait to see either of those doesn’t sound too appealing, it looks like that final RTM build 7720 of Mango has been leaked, and users are reporting successfully updating their phones.
We’d be wise to remember the problems WP7 handsets have run into when running unauthorized software updates in the past, but if you feel the risk is worth it, the 404MB download is your ticket to Mango’s final build.
Users in the XDA-Developers thread where this leak was published report that the software includes language support for German, English, Spanish, French, and Italian. The update process looks long and a bit convoluted; instructions with the leak explain in German how you need to start with Zune software 4.8.2134.0 on your PC, then bring the phone up through a series of updates to build 7712 prior to making the last step to RTM 7720. If you’re already on 7712, though, it’s a whole lot simpler.
Not everything’s working perfectly, though, and some 7720-specific features like connecting to hidden WiFi APs are absent. While that may point to fakery, it could also be a result of requiring additional code updates from the manufacturers of individual smartphones in order to go active. Turn-by-turn navigation, on the other hand, does appear to be intact.
If you feel up to giving it a shot, links to the download and further installation instructions are available in the XDA-Developers source thread.