[HD2 Android Q&A, Help & Troubleshooting and Genera] BLAYZERUNNER:
Here you go...

I posted this a while back and was written like it was going to be your very first attempt at putting android on your phone. You can still follow this guide from step one till the end to make sure your doing everything correctly... Hope this helps and if it does hit up that thanks button at sometime.

(Im attaching most of the files you need at the end of the post. You'll have to find the radio, step 2, yourself because i cant compress it enough to fit under the 8mb attachment limit on xda. This is just in case you dont have them already or your not using the HD2 Toolkit)

THESE STEPS ARE TO BE DONE AFTER THE OP INITIAL PREREQUISITES i.e. windows mobile device center, activesync, proper spl version...

FOR NAND

--------the following steps (1 - 3) are to be preformed while at the tri-color boot screen (easiest way to reach is to turn off your phone while its connected to your PC then immediately hold volume down button till you see it n wait for it to say usb in the white section).

(by the way your device will ALWAYS automatically restart itself after a couple seconds if it is shut down while plugged in via USB to either a wall/car charger or hooked up to a PC this is normal)

1. install hspl3/hspl4

-run the "HSPL3_PKG/HSPL4_PKG" file. should be the only one in there

-make sure you select

2.08.HSPL

in the setup and go thru the wizard just like you would any other. It will only take a few moments to execute and once it finishes it will auto reboot your device. MAKE SURE AS SOON AS YOUR DEVICE TURNS OFF YOU HOLD DOWN ON THE VOLUME KEY IMMEDIATELY TO GET BACK TO THE TRI COLOR BOOT SCREEN.

2. install radio

-run the "customRUU" file with the HD2 icon in the radio of your choosing

-it will operate in a similar fashion as the HSPL3/4, automatically turning off device upon completion... make sure you hold down on the vol key again to get yourself back to the tri color boot screen.

3. install magldr113

-make sure your selecting "rom update utility" in the magldr113 file. dont run the "DAF" it wont work properly if you do and youll get errors

-BUT THIS TIME AS IT TURNS ITSELF OFF HOLD DOWN THE POWER BUTTON ON YOUR DEVICE AS IT BOOTS UP UNTIL U GET TO MAGLDR AND CONTINUE TO HOLD IT DOWN UNTIL YOU SEE ABOUT 12 DIFFERENT OPTIONS...

[B4. install CWM recovery [/B]

-go to option 5 "USB Flasher" and hit the green call key. wait a few moments till it shows USB....USB make sure the second usb pops up and your PC recognizes the connection. then when it does sync you get to......

-while still in the usb flasher mode above, simply run you desired CWM recovery which should the one your developer recommends for the builds as the requirements tend to vary from rom to rom.

-this is achieved by selecting the "DAF" file from the clockworkmod recovery your using

-and again this installer will shut off your device upon completion and HOLD DOWN THE POWER KEY LIKE ABOVE TILL YOUR BACK AT THE MAGLDR MAIN MENU (with options 1-12).

5. install rom

-go to option 8 "AD Recovery" and hit the green call button to enter into the CWM recovery u just installed

-after it loads up (GO!GO!GO!) go down to the "mounts and storage" option that is third from the bottom and hit the call key.

-once there go to the last option "mount USB storage" and hit the call key.

-give your PC a few moments to recognize the sd card for your device and choose to open it when your PC prompts with the regular file explorer or just find it and double click on the newly recognized drive (sdcard) if your PC doesnt auto prompt you.

-the new drive (sdcard) should be empty (depending...) then just find the desired rom you chose to use, right click on it and copy.....then over to the new drive (sdcard) and paste. might take a min or two depending on the roms size

-once the copying is complete hit the call button to "unmount" your sdcard then the back button on your device till your back at the CWM main screen

-go to the fifth option down and "install zip from sdcard" and hit the call button

-select the second option "choose zip from sdcard" and select the zip file you just copied to your sdcard. then it will begin to install the rom and all rom install times vary by build. some take a minute, some seem like they take forever.

-once installation is complete hit the back button till your back at CWM main screen and choose the last option which is to "power off"

-then tap the power button(if u unplugged it from usb otherwise it wil reboot by itself) to turn on your device and give it some time for the initial boot and load as it has to set up everything u just installed. subsequent boot wont take as long but again it can all vary from rom to rom.

-after initial load and a successful bootup you should arrive at ether the lockscreen or a startup screen. give the rom a few more mins to settle and dont hit any buttons. then unlock the device or skip through the startup options and get to the home screen. maybe give it another min to settle the launcher and the last bit of data and resist the urge to mess with the features. your gonna hate this but hold down the power button and select power off device from the popup men. i know it sucks but it is best practice when flashing roms and the like. after device shuts off wait a few seconds and turn it back on and let it reboot. should be faster this time and when u get to your lockscreen simply give it a few seconds to settle again, unlock and go to main launcher a wait a couple more seconds for it to finish settling and.....have fun!

Maybe its not so abridged but oh well tried my best to be as clear as possible so people can utilize their HD2 to its fullest potential.

HOPE THIS HELPS and lemme know if i need to edit any information.:D

Oh yeah and as for ROM selections give these a try:

CM7/gingerbread - Typhoon by Tyween, Dorimanx High End Rom by Dorimanx

Sense 3.x/gingerbread - Team blue Droid by Dansta, Sensation XL stock by carl 1961

CM9/ics - Unofficial AOKP for HD2 by Xylograph, Nexus HD2 ICS by Tytung

There are lots more to choose from, these are just some of the more notable ones that ive used.