HTC HD2 has something that very few phones have, and this is a strong community of developers. Because of this, owners of HTC HD2 can now enjoy the Android Jelly Bean 4.1 on their devices.
This version of the ROM, regardless of which is still in alpha version, covers most things. Wi-Fi, Bluetooth, Internet calls and working, but unfortunately not yet supported camera and display video.
This version of the software is still not for everyday use, but the speed at which it develops impressive, so it will not be long until all bugs and problems are corrected, and while it does not add support for the rest of the hardware on the HD2.
If you are interested in more detailed information, visit the XDA Developers forum where there is a history of the development of Android ROMs for the device, and from there you can download the first version of this alpha ROM for HTC HD2.