Please title your thread properly, and please search before posting. Both of these are among xda rules.
This is not HTC-support, no one will "guide" you. This is xda, you need to go out there and find stuff yourself, it's not that hard. Just google "How to install android on the HD2". Instead of the ROM the guide will suggest, use a ROM that is the "latest".
Do you have a question about the HD2 ? Ask it here for an instant response.
nexus⁴: Stock 4.4 rooted & xposed.