[HD2 General] mrpoe:
Please read the whole post first sorry about the mess it is my first post thanks to everyone here on xda who came up with everything i used to do this There is guides for this xda has a lovely list of tmous roms if you are on t mobile in the us http://www.xdafil.es/index.php?path=HD2/TMOUS/

i would start with the RUU_Leo_1_5_TMOUS_2.02.531.MASD_S__Radio_Signed_15 .29.50.07U_2.06.50.04_TeleNav-5.5.42.zip

extract the .exe file if it has one than extract the RUU_signed.nbh from the .exe file using win war or 7 zip than rename it to LEOIMG.nbh and place it on a newly formatted microsd not a microsdhc and i had problems with anything over class 4

place it in your phone and hold the volume down button and power button as loading comes up let off volume down power button will start the flash(i was only able to do complete flashes in the freezer if not it would hang or get radio errors)

i also had a tmous which did not want to flash the radio i would get an an error and rsa fail it sounds crazy but i wrapped it in plastic and stuck it in the freezer for a while before and during the flash this was the only way i could install the radio and actually see rgd information on boot screen after this first one you will have an old test rom with an old spl you cannot change to hspl from here i also was not able to go straight to 2.10, i had to step up from RUU_Leo_1_5_TMOUS_2.03.531.6_Radio_Signed_15.30.50 .07U_2.06.50.23_3_Test.zip, to RUU_Leo_1_5_TMOUS_2.03.531.6_Radio_Signed_15.30.50 .07U_2.06.50.23_3_Test.zip the same way i did the first one,hard resetting after each one and let it open windows completely to know it is working. than i believe there is an hspl3 file somewhere out there with all thanks to DarkForces Team HardSPL3 by bepe and Cotulla i will try to attach it that will work with spl 2.02 wich you should now be on now you can download your radio in the master radio thread http://xdaforums.com/showthread.php?t=611787

i also just renamed the ruu_signed.nbh to LEOIMG.nbh and ran through sd i seem to have problems through usb and i was trying to be careful with the radio

once you got the radio you want you could flash the rom preferably running task 29 before or get yourself magldr to install through nand i also stuck my laptop an the freezer with the phone to get wp7 completely installed i did all this mess with a phone that had a broken screen i think there is like thermal compound over the processor to the case that is not on right and overheats when not in the operating system like a crappy old laptop with its fans full of stuff trying to install xp. and while a stock rom was being installed the usb was pulled during the radio installation i hope this helps i belive i saw one post to stick it in the freezer out of everything that i think helped the most.i also notice i have to put it in the freezer at boot too sometimes or i will get a fatal hit error i think its just over heating..... i also have an hd2 which has never been opened before that i have never had to stick in the freezer it gets flashed quite abit right now running gingerbread on normal hd2 and wp7 dual boot android 2.2 on the one i had to freeze i hope this helps i was here for weeks reading reading i was stumped cus my first hd2 and g1 were so eazy i will update this post once i stop being lazy and open the phone again to replace the goop to see if that is the problem

Thank you for reading my jumble and thanks again to all you phone heads here on xda which without you none of this would be possible and i would not have wp7 and gingerbread on my hd2 : D