Android 2.1 and 2.2 (Froyo) hacked onto the HTC HD2

Four months ago, T-Mobile released the Windows Mobile 6.5-powered HTC HD2 in the US — and four months ago, the battle to jam Android onto it began. The endeavour has sort of chugged along so far — but it just took a massive leap forward.

In the past few nights alone, the never-sleeping hacking community over at XDA-Dev managed to get not one, but two builds of Android working on the handset: a 2.1 ROM pulled from the HTC Desire, and a build of Android 2.2.

While the Android 2.2 build has a few kinks that need to be worked out (like wonky audio during calls and a shaky 3G connection), we’re hearing that the 2.1 release is pretty much faultless. Hell, one user goes as far as saying that the HD2 hacked 2.1 build is “more stable than [his] myTouch 3G.”

If you’ve got an HD2 by your side and are ready to dive in, you can find all the details in this XDA-dev thread. Be warned: While things like this are never for the feint of heart, this one’s particularly difficult to dive into; this conversation has been going on for months at this point, so it’s all a bit of a mess. The latest breakthroughs started happening around page 315, so that’s probably not a bad start if you know what you’re doing.

Don’t have an HD2? Too nervous about potentially turning your handset into the world’s most expensive paperweight? The guys over at HD.IT were nice enough to hack the heck out of their own handset and do a nice, exhaustive video demonstration. Check it out below.