Getting Android 2.2 up and running on the HTC HD2 is no big news. Until now, HD2 owners had to run the Android 2.2 build on their HD2 using the microSD card. Due to this, the phone used to slow down sometimes and this also reduced the life span of your microSD card along with hogging up some precious space on it.
However, today the DFT team has released a new ROM for the HD2 which runs completely of the NAND. Due to this, this ROM will run comparably faster on the handset compared to other Froyo ROM out there.
Also users will no longer need to boot into WM6.5 to get Android 2.2 running on their handset. They can directly boot into Android 2.2 on their HD2. This ROM is based on the stock Desire HD ROM so users will find the popular HTC Sense UI overlay on top of Android 2.2 Froyo.
HTC HD2 owners can find the full guide on how to install the NAND based Android ROM on their handset here.