[HD2 General] mengfei:
I just got my 3rd HD2 here in HK & it seems like there are a lot more here that are in very good condition. I use 3 SIM cards so i have 3 HD2 but i'll be giving them to the wife & son :p

I just realized how efficient WinMo6.5 was when it came to battery life, 4 days of continuous standby & there is still 3bars from the 4bars of battery indicator - will we ever have this efficiency in WP7/ Android system? :rolleyes:

so if you just got your HTC HD2 & it's running WM6.5 & you want to run WP7 or Android or even Both, here's what I did with mine & for some of my friends. I have made this as close to what the steps I took with pictures & screen caps so that the first timer can also follow it easily. For some steps I really can't explain since some of them just came out of trial & error, please do correct any mistakes I've made, thanks:D:p

Many-many thanks to guys, dev's, chefs for making such software's & ROM's for us to continuously enjoy our HD2's. Don't forget to thank them also by hitting the Thanks button :cool:

What you will need

- USB cable from HD2 to PC(preferably connected to a UPS)

- a fully charged battery

- a Micro SD with Card reader (16gig if your going to dual boot,

Card will be formatted & all files will be deleted during the process

)

- MS Active Sync, HD2 Drivers which you might have already, ADB & USB drivers >>>> http://xdaforums.com/showpost.php?p=23358842&postcount=16

- HD2 NAND Toolkit - A must have!

get it here >>> http://xdaforums.com/showthread.php?t=1090783

- Radio 2.15.50.14 - I use this & it is mostly recommended [TMOUS user read this to avoid bricking >>> http://xdaforums.com/showthread.php?t=669733]

get it here >>> http://xdaforums.com/showthread.php?t=611787 or here >>> http://www.addictivetips.com/mobile/install-2-15-50-14-radio-on-htc-hd2/

- Your choice of ROM [Android or WP7]

see them here >>> http://www.mojardroid.com/htchd2/index.php or here >>> http://xdaforums.com/forumdisplay.php?f=977

Once you've downloaded the software's & ROM's needed we can proceed to root/ flash our HD2.

here's a peek at the existing spec of WM6.5 I had (most of the HD2's here are in Chinese)

IF IN DOUBT - DO NOT FLASH!

1. So first thing we need to do is to get into HD2's "bootloader mode" or the "Tri-color" screen.

- turn off your HD2

[I assume you got ALL you files/ Data on Backup already]

- hold the volume down button

- while holding the VOL. down then Press the POWER button

this is what you will see, notice the SPL version & the word "Serial" at the bottom. We need to change the SPL-1.42.0000 to SPL-2.08.HSPL

while in this mode, plug in your HD2 to the PC, noticed that the "Serial" has changed to USB.

run HD2 NAND Toolkit & hit Install HSPL 1

a screen will pop-up & noticed the SPL's needed before rooting/ flashing can be done, press Next

select 2.08.HSPL

there you go, your phone now is in SPL-2.08.HSPL

Now go back to the bootloader mode as in 1. & noticed that the SPL-2.08.HSPL is already there & is in USB, unless you've unplug it.

2. run HD2 NAND Toolkit & hit Wipe(Task29) 2

when a series of screen pops up just tick the Boxes & press next & flash :p

this is what you will see while flashing

& this is what it will be after Task29 - an empty shell :p

3. Now we need to flash the Radio 2.15.50.14 (you downloaded it right?) TMOUS users read Warnings >>> http://xdaforums.com/showthread.php?t=669733

open the Folder [HD2_Leo_Radio_2_15_50_14] where the Radio is & run CustomRUU

Now go back to the bootloader mode as in 1.

when a series of screen pops up just tick the Boxes & press next & update :p

check out the Radio Version

Alternatively you can flash Radio via HD2 NAND Toolkit

open Toolkit & select browse & point to the location of your Radio

just follow the next steps. Be Careful when flashing RADIO as it can Brick Your Phone