Hi All,
I need your help in deciding what are my options.
I have read many posts and ended up confused (no offence meant) because of my situation.
Some posts that are similar are too old as my condition has changed since then.
I will try to give as much info before asking, so here it goes:
System Info-
Model: HTC HD7 T9292 from T-Mobile
Software: Windows Phone 7.5
OS Version: 7.10.8773.98
Firmware revision number: 2250.21.51101.206
Hardware revision number: 0002
Radio software version: 5.71.09.02a_22.51.50.21U
Radio hardware version: A.12.0.D4
Bootloader Version: 5.11.2250.0(134400)
Chip SOC version: 2.2.5.0
History:
I installed some custom rom last year. Now, when the phone starts, I see O2 Welcome message. I think I have a official ROM as per that splash of O2.
Issues:
Lately, the cellular reception has drastically deteriorated.
GPS does not show accurate location and takes a few tries of opening the Locations app and pressing the locate me option.
Unable to find an awesome solution as a GPS app, as i can't afford to use data all the time, it costs a lot in New Zealand.
Question:
- I want to know if I can make my WP7 experience any better or its too late as i updated my phone to Mango.
- Can someone please take time to go through and just post the links to the steps that I can perform without damaging anything.
- I want to be able to install apps, XAP's, make changes to improve performance and better radio for reception.
I have seen posts on threads, but still confused which are the right steps to be followed as everyone's phone, updates installed, ROM's installed are different. I deeply acknowledge everyone's hardwork, and time spent to read and make posts, and apologize if i am being duplicative, but just looking for right info and steps that would make things understandable for me.
Many Thanks,
you may use the Goldcard method to revert back to another ROM. e.g. TMOUS Shipped ROM
sh4d0w86 said:
you may use the Goldcard method to revert back to another ROM. e.g. TMOUS Shipped ROM
Click to expand...
Click to collapse
Sure, I can revert, but want to know if I revert to the shipped ROM, what process do I follow from there on to get a custom ROM e.g. deepshining, and will that also allow me to sideload apps (xap installs).
cunir1 said:
Sure, I can revert, but want to know if I revert to the shipped ROM, what process do I follow from there on to get a custom ROM e.g. deepshining, and will that also allow me to sideload apps (xap installs).
Click to expand...
Click to collapse
see the tutorial I wrote, link in my signature.
and yes, all the Schubert Custom ROMs have at least Dev Unlock, whic allows XAP sideloading.
sh4d0w86 said:
see the tutorial I wrote, link in my signature.
and yes, all the Schubert Custom ROMs have at least Dev Unlock, whic allows XAP sideloading.
Click to expand...
Click to collapse
Thanks a lot for the Info.
I saw the links, just want to confirm i am heading right.
I would follow the process and install the Pre-NoDo ROM as below:
TMOUS 1.54.531.02 HTC HD7 7.0.7004.0 2250.09.15402.531
After flashing this ROM on, I can flash it to the custom ROM from deepshining, which would include the latest radio too. (please add on any suggestions you have on the version so that I choose the right one)
By doing this, I would have the latest WP7 version, latest radio, and ability to install .xap files.
As soon as you confirm, I will complete the said tasks and update with the results.
PS: Please correct me if I am wrong somewhere.
Thank You for being a great help
after Goldcard method, you need to XSPL before flashing a Custom ROM.
Thanks for the info.
Would I have to do the XSPL or HSPL.
Also want your suggestions on the radio, if i should install it seperate or does the deepshining Rom include a good radio already.
I will make a Y cable and follow the Goldcard method. Can't we use a SDHC card for doing the goldcard?
XSPL = RSPL and HSPL
RSPL is reloaded SPL. Meaning that it's not permanently flashed to the device and will reset to OSPL (original SPL) after you flash the rom or if the device is rebooted.
HSPL is hard SPL. Meaning that it is permanently flashed to the device, replaces OSPL and will stay after flashing a rom.
If you only install RSPL, everytime you flash a new rom or a updated rom version you will have to put the device into bootloader mode and connect it to the PC and reinstall RSPL to the device and while it's still in bootloader mode, flash the new or updated rom version.
If you install HSPL to the device and want to install a new or updated rom version, you just have to put the device into bootloader mode and connect to the PC and flash the new/updated rom version. You don't have to do a reinstall. HSPL is much easier and can still be returned to OSPL if needed to be.
To install XSPL - First you need to install RSPL to the device. Put the device into bootloader mode and connect to the PC (wait and allow it to install the Qualcomm drivers) open and run the RSPL wizard, choose the closest RSPL version to your devices SPL version (eg. If SPL version is 1.10 and the closest RSPL version is 1.12 choose that version) and install RSPL to the device, once RSPL is successfully installed make sure that the SPL on the bootloader screen changes from SPL to RSPL, and if you want to install HSPL, keep the device connected, close the RSPL wizard and open and run the HSPL wizard, choose the closest HSPL version to the devices RSPL version and install. Once HSPL is successfully installed make sure that the RSPL on the bootloader screen changes from RSPL to HSPL. Keep the device connected and close the HSPL wizard, open the custom rom file and double click on the ruuwrapper (rom update utility wrapper) follow the prompts on the screen, flash the rom to the device and enjoy.
If you're not gonna install HSPL, once the RSPL is successfully installed keep the device connected to the PC, close the RSPL wizard and open the custom rom file and double click on the ruuwrapper and follow the prompts on the screen and flash the rom to the device.
Most custom roms have a recommended radio version and are included in the rom and will be installed when flashing the rom. Deepshining has one packaged with it.
SDHC cards will work... Make sure it's a 1gb - 2gb SD card and formatted to FAT32. Larger SD cards can work but need to be partitioned down to 1gb.
Related
Guyz,i am a newbee and i need a good help from u all.
I got a new htc hd7 generic phone??
And its "about phone" are
Name: htc hd7 t9292
Os version:7.0.7004.0
Firmware revision number:2250.09.16001.401
Hardware revision number:0002
Radio software version:5.52.09.16_22.33a.50.10v
Radio hardware version:A.102.0.D4
Bootloader version:1.60.2250.0(114364)
Chip soc version:2.2.5.0
So here is what i need and what i want to know
1) does i have the latest version?
2)if not then what is the latest version, and what are nodo and mango?
3)can i get the ruu(original htc hd7os) of any of the latest version?and from where?
4)does the ruu contains all the required os areas like radio,rom etc.
5)how can i flash it to my phone?do i require zune? And why(is it just for drivers)?Or there is any tool for ruu flashing?
6)i want to install app(certainly more than 10) in my phone, and for that what i want to do? I dont have market in my country,as the market app said, when i tried to download app, so the only way is to download it in computer and then move it to phone, so what are the tools i need?
7) does my original ruu alow me to do this?or do i need a custom rom?
8)as my phone is not network locked, what are the things i want to do,just for unlocking the os,so that i can install app.
9)does there is any custom rom,built from the latest winmob7 os?
8)what are the advantages i get,if i use custom rom?(no need to reply in general, coz i know what is a custom rom,kernal, as i am using htc wildfire with cyanogen mod 7.0.3, oc kernal, new radio etc. I know it have many advantages over the original one, but here it is not an android, lol i got the hd7 2days before, and so not so familier with it, thats what my problem)
9)how can i flash a custom rom,kernal,radio,image to my phone?and what are the tools i need?
Lastly pls help me 2 understand various tools like cheveron,etc. That are required to customize my phone.
Thanks in advance to all of u..
I searched and read a lot in this forum, fount no stickies, and got confused of various terms like rspl,hspl,slideloading,reg editing,unlocking etc. So i cant get the right procedure/ans for my doubts, so intended to ask i. Pls help me.
Sent from my HTC Wildfire using XDA App
1) No
2) Flash an official NoDo rom to be up to date with OS, Radio & Bootloader
3) You need to know if your phone is brandet & the region (T-Mobile, O2, Europe, Asian,...)
4) original RUU's contains the whole SW for the phone (radio, bootloader, os,...)
5) for flashing go into the bootloader menu by switch of your ohone & restart it with pressed volume down key.
Zune is needed for drivers & ActiveSync (WinXP) or Windows Mobile Device Center (Vista, Win7) for drivers in Bootloader
With Zune you also get offitial updates (os, radio, Bootloader,...)
6) you need the chevron unlock to sidload apps (only possible on 7004 & 7008)
7) costum roms only if your device is supported by cotullas xspl (see sticky)
8) see point 6
9) ansars rom is the only costum rom which can be updated via zune
There are also 2 DFT costum roms but with these you can not update any further
8) ?!? you mean 10 ==> you do not need 7004 or 7008 to unlock the rom
after unlocking you need less time to come to the latest os version via zune
9) ?!? you mean 11 ==> if your phone is supported by xspl than flash HSPL (Bootloader) to your phone and you be able to flash costum rom's (for radio, os,...)
Chevron unlock is only needed for roms that are not allready unlocked (like custom roms are)
i also have a question:
I have zune and windows mobile device center loaded on my Windows 7 desktop, but wmdc will never recognize my hd7, what can i do because it never works when i try to use the ruu
Windows Mobile Device Center is only for drivers in Bootloader mode
If you shut down your phone and restart it while pressing (and hold) the volume down button, you will enter the bootloader mode.
There are a few informations on that screen
This are the information of my bootloader:
PD29100 SS-BC (4k)
HSPL3.1.2250.0(119314)
CotullaHSPL 0x07
Touch S1(v1.8,#1624)
SD SANDISK 7580MB
Partition Info-v211v413
Serial
at the bottom ther will be a text called serial.
if you have connected your device to your computer & installer Windows Mobile Device Center the text will change to USB after the the drivers are correctly installed.
If USB is displayed on your phone you can start flashing a rom by starting the RUU on the PC
These are normal questions, so I decided to report that post to move it to Questions/Answers
moved to general
no my phone is not a branded one, ie no tmob etc. so which firmware i should use, as i am from india, can i use generic asia? or any unbranded one as long as it contains eng lang?, coz i use english only and dont need any other languages.
but still i have doubt.
what is the use of a gold card( i downgraded my hboot of wildfire using gold card, so i dont mean use of gold card, but how do it work in flashing htc hd7) , also do i need it to flash any ruu or custom rom?
you said, as reply for my 6th question,
'you need the chevron unlock to sidload apps (only possible on 7004 & 7008)'
so what do u mean by 7004 and 7008? is it updates or some thing else? i know there are 7720 mango for hd7 flying around, so is it official or a leaked one? does chevron work in it? or can i hack it by any method, so that i can slidload more than 10 app?
and what is the latest custom rom with no sidload limit? can i get a 7720 mango custom rom?
can i get the drivers only? i dont want the whole zune and active sinc
you do not need to flash anything!
Install Zune and update your OS via it to NoDo version.
If you want to unlock you phone (jailbreak, not simunlock) than you have to use the chevron unlock process bevor you update via zune
your phone haf to be un os version 7.0.7004 or at least 7.0.7008 with newer os Versions you can not use chevron anymore.
as I think you have a normal european HD7:
Firmware revision number:2250.09.16001.401
so if you want to flash you have to look for original European roms
if you want to flash other roms (other regions or costum roms) you can use xspl or goldcard
xspl is a new hacked bootloader wich has the ability to flash every HD7 rom you like.
goldcard is a methode which could bypass the CID/MID check like xspl does but you need aditional components for that (y-cable, goldcard,...)
you are right when we talk about versions or build numbers, we take about the os version 7.x.xxxx
WP7 start with build 7004
Nodo have build 7390
Mango RTM has build 7720 not official available via zune
conclusion:
if you want to sidload apps you have to unlock you phone as long as it runs on 7004 or 7008
ansar post a guidline how to update without loosing the chevron unlock see here:
http://forum.xda-developers.com/showthread.php?t=1101344
for getting mango RTM on the phone read this thread, it's tricky but possible.
http://forum.xda-developers.com/showthread.php?t=1149265
but beware if you do not combine it with the guidline from ansar, you will loose your chevron unlock (dev-unlock)
If you are not afraid of flashing roms, start with xspl (simplest methode)
http://forum.xda-developers.com/showthread.php?t=1195647
than flash ansars costum 1.69 rom (unlocked NoDo rom)
http://rapidshare.com/files/1043958...4.09.21_22.33b.50.10_NoDo_custom_by_ansar.zip
and than start to update to the unofficial Mango RTM like the guidlines above.
I don't know if you can extract the drivers from Windows Mobile Device Center, but Zune is necessarry for updating.
Oh no, once again I got stuck, all things I have installed in my win7 ultimate lap, such as zune 4.8,wmdc etc, and I am able to hspl my device, and in normal mode my lap detects it as a win7 mobile, but still zune can't detect it. So no chevron!!! What is the problem, I tried multiple install-uninstallations, but no luck, help me to do it, pls
Sent from my HTC Wildfire using XDA App
Hello, new to 'hacking' the WP7 but i want to flash a custom dev unlocked ROM to my phone, but i want to make sure i dont use the wrong ROM, so i was hoping someone could point me in the right direction?
I have a HD7 (T Mobile unlocked, US model, i'm in the UK if that makes a difference, also using o2)
It's currently running the official mango by the disconnect internet trick in zune.
Thanks in advance!
JeffaCakes said:
Hello, new to 'hacking' the WP7 but i want to flash a custom dev unlocked ROM to my phone, but i want to make sure i dont use the wrong ROM, so i was hoping someone could point me in the right direction?
I have a HD7 (T Mobile unlocked, US model, i'm in the UK if that makes a difference, also using o2)
It's currently running the official mango by the disconnect internet trick in zune.
Thanks in advance!
Click to expand...
Click to collapse
any Schubert ROM will flash successfully to your HD7 with RSPL or HSPL installed.
with that said...
is either RSPL or HSPL installed?
if not... you will need to get that. DFT's RSPL/HSPL.
and here is a little how-to if you have the wrong SPL. see steps 2 and 8.
after that,
any ROM in the HD7 WP7 Development thread should flash fine.
sh4d0w86.
sh4d0w86 said:
any Schubert ROM will flash successfully to your HD7 with RSPL or HSPL installed.
with that said...
is either RSPL or HSPL installed?
if not... you will need to get that. DFT's RSPL/HSPL.
and here is a little how-to if you have the wrong SPL. see steps 2 and 8.
after that,
any ROM in the HD7 WP7 Development thread should flash fine.
sh4d0w86.
Click to expand...
Click to collapse
Thats great thanks! just a few questions for you..
RSPL or HSPL? (sorry new to this ^^")
So if i install a nodo ROM (considering i'm currently on Mango) will it just roll back with no problems?
do i need to do anything specific with these ROMS that have different radio software versions? or can i just ignore them?
I'm trusting if i use the backup tool i can restore my text messages etc again, i dont really feel loosing them. :/
JeffaCakes said:
Thats great thanks! just a few questions for you..
RSPL or HSPL? (sorry new to this ^^")
So if i install a nodo ROM (considering i'm currently on Mango) will it just roll back with no problems?
do i need to do anything specific with these ROMS that have different radio software versions? or can i just ignore them?
I'm trusting if i use the backup tool i can restore my text messages etc again, i dont really feel loosing them. :/
Click to expand...
Click to collapse
RSPL is, basically, a temporary SPL, which returns to OSPL (stock SPL) after reset.
HSPL is 'permanent' until you flash another SPL or return to stock.
both allow you to flash a custom ROM.
if you flash a RUU_Signed.nbh from a NoDo ROM it will 'roll back' fine, but will erase all data currently on the device.
but if you just flash the SPL_Signed.nbh from a NoDo ROM, it will only flash the Radio and SPL. i recommend task00 to flash this.
unfortunately, through Zune, SMS doesn't get backed-up.
sh4d0w86.
sh4d0w86 said:
RSPL is, basically, a temporary SPL, which returns to OSPL (stock SPL) after reset.
HSPL is 'permanent' until you flash another SPL or return to stock.
both allow you to flash a custom ROM.
if you flash a RUU_Signed.nbh from a NoDo ROM it will 'roll back' fine, but will erase all data currently on the device.
but if you just flash the SPL_Signed.nbh from a NoDo ROM, it will only flash the Radio and SPL. i recommend task00 to flash this.
unfortunately, through Zune, SMS doesn't get backed-up.
sh4d0w86.
Click to expand...
Click to collapse
I've managed to roll my phone back using the zune software, i didnt know that was a option, so now it's back to NODO but with the problem of my SPL is set to v4.5 and the link you sent me here takes the SPL to 4.05 if i'm reading it right.. but DFT RSPL only goes up to 3.4... so have i hit a dead end completely? :S
JeffaCakes said:
I've managed to roll my phone back using the zune software, i didnt know that was a option, so now it's back to NODO but with the problem of my SPL is set to v4.5 and the link you sent me here takes the SPL to 4.05 if i'm reading it right.. but DFT RSPL only goes up to 3.4... so have i hit a dead end completely? :S
Click to expand...
Click to collapse
nope. not a dead end.
quickest fix.
01. visit HD7 Radio Wiki, link in my signature.
02. download a stock NoDo or Pre-NoDo Radio for your device.
03. extract the SPL_Signed.nbh from the 'stock' folder.
04. flash SPL_Signed.nbh with task 00.
05. SPL has now been rolled back.
from there...
06. flash RSPL.
07. flash HSPL, if desired.
08. flash newer Radio, if desired, using RUU_Unsigned.nbh from desired Radio.
09. flash Custom ROM of choice.
sh4d0w86.
sh4d0w86 said:
nope. not a dead end.
quickest fix.
01. visit HD7 Radio Wiki, link in my signature.
02. download a stock NoDo or Pre-NoDo Radio for your device.
03. extract the SPL_Signed.nbh from the 'stock' folder.
04. flash SPL_Signed.nbh with task 00.
05. SPL has now been rolled back.
from there...
06. flash RSPL.
07. flash HSPL, if desired.
08. flash newer Radio, if desired, using RUU_Unsigned.nbh from desired Radio.
09. flash Custom ROM of choice.
sh4d0w86.
Click to expand...
Click to collapse
Sorry another question, I had found this program for making backups, now for some reason i cant post on that thread but it wont restore after i installed the new ROM, i dont suppose you have any idea why? it says restored in 6. something seconds then restarts the phone with no changes :S
Thank you again for all your help ^_^
JeffaCakes said:
Sorry another question, I had found this program for making backups, now for some reason i cant post on that thread but it wont restore after i installed the new ROM, i dont suppose you have any idea why? it says restored in 6. something seconds then restarts the phone with no changes :S
Thank you again for all your help ^_^
Click to expand...
Click to collapse
i unfortunately don't know.
best bet, is to ask the question on that thread.
i haven't ever tried using it to back up my device.
actually, i haven't ever backed up my device before.
too busy constantly flashing and testing my intrinsicROM.
sh4d0w86.
Hello!
Just say, that in such a case a beginner ...
Telephone - European, 8GB.
Version that appears in the bootloader, after all the latest updates
SPL-5.11.2250.0 (134578) MNG
When you try to roll back the phone to an earlier version by version Official firmware, progress bar at zero, an error pops up 226 Flash Write Error. Downloaded again and again, with different sources firmware, all the same. ROM does not want to flash, ask for help in solving the problem ... Thank you.
P.S.
Sorry for my english.
membrana said:
Hello!
Just say, that in such a case a beginner ...
Telephone - European, 8GB.
Version that appears in the bootloader, after all the latest updates
SPL-5.11.2250.0 (134578) MNG
When you try to roll back the phone to an earlier version by version Official firmware, progress bar at zero, an error pops up 226 Flash Write Error. Downloaded again and again, with different sources firmware, all the same. ROM does not want to flash, ask for help in solving the problem ... Thank you.
P.S.
Sorry for my english.
Click to expand...
Click to collapse
Be careful with just trying to flash rom versions, you can damage the bootloader and brick you device.
What is it that you are trying to do exactly?
Are you wanting to install a custom rom?
What method are you trying to use?
With a 5.xxx bootloader you can only use the goldcard/ Y cable method to flash your device and downgrade your SPL, unless you have a pre-mango Zune backup/restore point on your computer, then you can use that also to downgrade you SPL.
Let me know what your trying to accomplish and I'll try and help you!
Hi, xdrc45
Exactly I want to install Nextgen 3.4.
I'll trying to install official rom & and custom rom too.
In my planes firstly roll back to earlier versions (because HSPL installer says that required version firmware is not higher 1,6.....), then install HSPL & finish by installing Nextgen 3.4.
Can you help me step by step what I need to do?
Many many thanks for the any help!
membrana said:
Hi, xdrc45
Exactly I want to install Nextgen 3.4.
I'll trying to install official rom & and custom rom too.
In my planes firstly roll back to earlier versions (because HSPL installer says that required version firmware is not higher 1,6.....), then install HSPL & finish by installing Nextgen 3.4.
Can you help me step by step what I need to do?
Many many thanks for the any help!
Click to expand...
Click to collapse
You have to lower/downgrade your SPL to at or under 3.xxx to install RSPL/HSPL then flash Nextgen.
With 5.xxx SPL you can only downgrade your SPL in two ways.
1. Goldcard/ Y cable method, requires you to make a "Y" cable made out of 2male and 1 female USB cables and you need a SD card reader/flash drive.
2. Pre-Mango restore point, (Zubair's method, in Shadows tutorial) meaning you upgraded your device from a pre-Mango version to Mango and to you have the computer that you did it on.
Follow Shawods tutorial here, it explains all the above, How to downgrade SPL, flash XSPL and install a custom rom.
http://forum.xda-developers.com/showthread.php?t=1295068
Take a look at this thread I wrote, it will tell you how to backup your data and restore your apps, cause you will loose them all.
http://forum.xda-developers.com/showthread.php?t=1779517
If you have any problems or questions just let me know and I'll try to help you!
Having the same problem with htc hd7 t9292 16gb
xdrc45 said:
Be careful with just trying to flash rom versions, you can damage the bootloader and brick you device.
What is it that you are trying to do exactly?
Are you wanting to install a custom rom?
What method are you trying to use?
With a 5.xxx bootloader you can only use the goldcard/ Y cable method to flash your device and downgrade your SPL, unless you have a pre-mango Zune backup/restore point on your computer, then you can use that also to downgrade you SPL.
Let me know what your trying to accomplish and I'll try and help you!
Click to expand...
Click to collapse
My spl is 5.11.2250.0 (134578) MNG
MicroP (LED) 0x07
TOUCH S1(V2.B,#1625)
i am having the backup in my computer when this phone was only windows 7
can it work for me
please tell me which rom i should use
How should i proceed
i have tried to update and it stuck with 7 vibrations and showing only htc white screen
tried soft reset, hard reset, used windows phone support tool but futile
when used the windows 7 rom i am also getting the same flash write error
please help
thank you
:crying:
hello guys, I am new in this forum and I don´t know many things about this. my question is: I have an htc hd7 which comes with the manufacturer rom. I would like to unlock the phone to install new roms and aplications from other markets. can anyone of you guys recomend some unlock metod which is secure. thank you very much
danandrei83 said:
hello guys, I am new in this forum and I don´t know many things about this. my question is: I have an htc hd7 which comes with the manufacturer rom. I would like to unlock the phone to install new roms and aplications from other markets. can anyone of you guys recomend some unlock metod which is secure. thank you very much
Click to expand...
Click to collapse
To unlock your device you have to downgrade your SPL to at or below 3.xxx and then install RSPL/HSPL and then you can flash a custom rom of your choice.
These are the only methods to downgrade your SPL -
1. Goldcard/ Y cable method - requires a Y cable, either home made or purchased. SD card and a card reader or a flash drive and download a goldcard tool and a stock/shipped Pre-NoDo/NoDo specific rom.
2. Zune restore point by Zubair- if you updated your device from a Pre-Mango state through Zune and still have the PC you did it on, then you can restore your device and then re-update it to Mango again and it will change your SPL to 4.xxx then you can use Shadows tutorial to finish downgrading the device.
3. SLSPL rom by Ansar - This works on Europe devices with firmware revision number .401 and can work on SIM unlocked TMobile devices.
Just follow Shadow's tutorial on downgrading SPL, flashing XSPL and installing roms. It has all the links for the above methods, stock/shipped roms and everything you'll need.
http://forum.xda-developers.com/showthread.php?t=1295068
If you need any help or have any questions, just let me know!
i know nothing about jailbreaking of this phone
can sm1 pls guide mee wat to do to make my phone giving mee good speed & customizations
Hi,
You have to find out what bootloader/SPL version your device has.
Go to settings - About - More - This will give you your bootloader version, Firmware Revision # and the device Info. If you post back the bootloader version and Firmware revision #, I can help you with what method to use and what Pre-NoDo/Nodo rom to use.
These are the steps -
1. Downgrade your SPL version to at or below 3.xxx (which is required to install XSPL)
2. Install XSPL (RSPL/HSPL) to the device. (which is required to install a custom rom)
3. Flash a custom rom of your choice.
If your device is current and updated through Zune then the devices SPL is more than likely 5.xxx and you can only downgrade 5.xxx by these three methods -
1. Goldcard method - requires a Y cable, (either homemade or purchased online) a SD card reader, 1gb - 2gb SD card, and you have to download a Pre-NoDo/NoDo stock rom, goldcard tool and the goldcard image.
2. Zune restore point method - requires a Pre-Mango restore point through Zune. Meaning that you updated the device to Mango from a Pre-Mango version and still have the computer that you used to update the device with.
3. SLSPL method - requires to download the SLSPL rom and flash it to the device. This method is for Europe devices with Firmware revision # ending in .401 and can work on T-Mobile HD7 that is SIM/Carrier unlocked.
Follow Shadow's step by step tutorial on how to Downgrade SPL, flash XSPL and install a custom roms. It has all the links for the above downgrade methods and for all the stock roms and everything you'll need.
If you have any questions or problems just let me know.
Also this is a question and should be in the HD7 Q&A. Request to move thread.