How to flash back to stock? - myTouch 4G Q&A, Help & Troubleshooting

I need to do a warranty on my phone, how do I unroot and go back to stock? I tried on way and it didn't work? what did you guys do?

Mercuri82 said:
I need to do a warranty on my phone, how do I unroot and go back to stock? I tried on way and it didn't work? what did you guys do?
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Do a search for pd15img.zip.
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Look in the development section. There are a ton of step by step guides if you search.
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To revert back all you need to is flash the original tmobile rom that is in the rom development and it will take u back to the original state without root
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Phateless said:
Do a search for pd15img.zip.
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Find the above file, have it saved to root of sdcard, boot into bootloader, bootloader will find the file on the card and prompt to install the stock image... follow prompts and done.
Nandroid first but really is easy.
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I first flashed the 2.2.1 OTA. Then I flashed the stock recovery. Afterwards, flashed the stock radio. That's what I did. All are available in the Development section.

hldc1 said:
I first flashed the 2.2.1 OTA. Then I flashed the stock recovery. Afterwards, flashed the stock radio. That's what I did. All are available in the Development section.
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You could have used pd15img.zip to do all of that in one flash via hboot.

It's safer to flash back to the stock radio first to avoid getting stuck in a limbo situation in which attempting to flash back to stock results in "Main version older" with radio s-on rather than do it all in one step.
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crawler9 said:
It's safer to flash back to the stock radio first to avoid getting stuck in a limbo situation in which attempting to flash back to stock results in "Main version older" with radio s-on rather than do it all in one step.
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thats what im stuck in and cannot find a way out ! any advice?

Do you have root or are you on a stock unrooted ROM?
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I'm on cyqnogen 7.1.0 but with s on
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crawler9 said:
Do you have root or are you on a stock unrooted ROM?
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im s on since i tried to flash original rom but im still on cyanogen 7.1.0

emilianos said:
im s on since i tried to flash original rom but im still on cyanogen 7.1.0
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This guide should solve your problem. It involves hex editing the misc.img among other things to allow you to successfully flash back to stock.
http://forum.xda-developers.com/archive/index.php/t-832642.html
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Mercuri82 said:
I need to do a warranty on my phone, how do I unroot and go back to stock? I tried on way and it didn't work? what did you guys do?
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Click to collapse
If you used the gfree method of rooting, the following guide is pretty good:
http://theunlockr.com/2010/12/16/how-to-unroot-the-t-mobile-mytouch-4g/
Hope this helps.

this http://forum.xda-developers.com/showthread.php?t=832642 may help

conganhthuc said:
this http://forum.xda-developers.com/showthread.php?t=832642 may help
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Mhm, that's what I posted 2 posts above yours. Good idea btw!
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Related

Gingerbread

How would I go about getting gingerbread on my new mt4g?
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download cm7 (cyanogen mod 7) or download nexus s...either one will work from the development section. to use gingerbread, you will need clockwork recovery 3. (2 is flashed from rom manager) directions to flash clockwork recovery can be found through a search.
here are the links
CM7:
http://forum.xda-developers.com/showthread.php?t=916930
Nexus S
http://forum.xda-developers.com/showthread.php?t=895985
Thanks. Would I need to root my phone first? And would I need a comp doing al this?
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trofeo.08 said:
Thanks. Would I need to root my phone first? And would I need a comp doing al this?
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You don't NEED a computer to do this, but it GREATLY helps things along.
and YES you must be perma-rooted with s=off.
Ok. Thanks. How long would all this usually take. How do I go about rooting my phone.
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trofeo.08 said:
Thanks. Would I need to root my phone first? And would I need a comp doing al this?
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yes. to root your phone i suggest following the true permroot guide.
for the need of a computer..it is not required, but is recommended. it would easier to root your phone and flash your recovery with.
the true permroot guide can be found here
http://forum.xda-developers.com/showthread.php?t=858996
i also included some guides (credit goes to posters)
Guide to Flash CM7:
http://forum.xda-developers.com/showthread.php?t=919332
Also here is a guide to flashing recoveries(this needs to be done before flashing CM7):
http://forum.xda-developers.com/showthread.php?t=900608
http://forum.xda-developers.com/showthread.php?p=10670110#post10670110
if you need more guides:
http://forum.xda-developers.com/showthread.php?t=866175
Thanks. Ive been reading a lot of forums on it. And it seems difficult prob cuz I don't quite understand all the lingo just yet but im trying.
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You always need root to flash custom roms

Unrooting from.....

I just traded some one an HD7 for this MyTouch 4G.... Yayyy, back to Android ! Well, they already have it rooted and everything, but I like to start from scratch when I am modding my phones. I am coming from a Cliq so I'm not familiar with HTC. How should I go about unrooting the phone? And where should I start in the forum while trying to get familiar with modding this phone?
If it's already rooted, why unroot it? I would just make sure the latest recovery is installed, wipe it, and flash whatever ROM you want.
I'd you are looking to mod it... then you want to keep it rooted.
Its a good thing. You can even run the stock rom and make backups of all your apps and settings.
Root is good!
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I think he just wants to unroot it to gain the experience on this platform...
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Nicgraner said:
I think he just wants to unroot it to gain the experience on this platform...
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Correct. I would like to start from root and unroot it and know what the whole entire process is for this phone.
Any help out there? =P
xxbbyxxgirlxx said:
Any help out there? =P
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Look in the development section... there are many threads with step by step instructions. Search is your friend.
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search PD15IMG. Sets you back to stock and unroot.
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rockstarar said:
search PD15IMG. Sets you back to stock and unroot.
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+1....As Rockstarar said, the pd15img makes you go back to being unrooted. The pd15img is the stock OS image and the thread will on that will explain how to flash it.
After that I'd say check out the "Guide to permaroot" thread, that will explain the process in getting rooted permanently. Next you should check out the thread for clockworkmod Recovery 3.0.0.6, thats a version that enables us to flash both 2.2 and 2.3 base roms. Alot of ppl miss that thread and end up using the wrong recovery to flash roms and as a result they get boot loops.
After that you're good to go! Got alot of options in the development section to choose from, so pick ur poison
I remember when I jus started this thing I had no clue where to start so that should give you a nice guideline on how to get going
Thanks!! I can't wait to get started =P.
Good luck!

UnRoot??

Okay so I wanna unroot my Mytouch but I saw in a thread some one bricked there phone by flashing the PD15MG while having a different radio.....I have the latest gingerbread radio and was wondering doesn't the file supposes tto flash everything back to stock? And what is the safest way to UnRoot I used the GFree method btw
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If you have the latest radio you need to find the stock radio first. Some where in the development section someone has it in a PD15IMG zip by it's self. If you don't and you try the full it will give you a main version is older error.
And gfree won't work with the new radio.
Use this method, if you follow it to the T you will be ok
http://forum.xda-developers.com/showthread.php?t=924923
sent from my Google Nexus 12! yup I'm from the future
mark manning said:
Use this method, if you follow it to the T you will be ok
http://forum.xda-developers.com/showthread.php?t=924923
sent from my Google Nexus 12! yup I'm from the future
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If you follow that and unroot with the new radio you're screwed.
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[Q] Possible to flash CMW after OTA GB update?

Is it possible to flash Clockwork Mod Recovery after applying the 2.3.4 update?
Yes if you have s-off
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How about for us people with s-off and stock 2.3.4? Are we stuck on this ROM until someone gets root?
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shilent said:
How about for us people with s-off and stock 2.3.4? Are we stuck on this ROM until someone gets root?
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no if you have s-off you can flash Clockwork Mod Recovery or you can downgrade
I meant s-on. So its still possible to downgrade?
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shilent said:
I meant s-on. So its still possible to downgrade?
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I believe that they are working on a way to break 2.3.4 still. I haven't noticed any post confirming a successful root of the OTA update.
There has been some talk about gingerbreak doing something but it was experimental and I didn't do a whole lot of digging so I wouldn't recommend even trying.
shilent said:
I meant s-on. So its still possible to downgrade?
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yes you can downgrade with s-on here you go http://forum.xda-developers.com/showthread.php?t=1178912
shilent said:
I meant s-on. So its still possible to downgrade?
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Follow the instructions on this thread and you should be able to downgrade then root.
I'm on stock 2. 3. 4 s -off and can't flash cw
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Does anyone know if there's an updated guide to downgrading? I think the links (like to download the JAVA JDK) needs to be updated. I've spent hours reading and trying to find exactly what I need to download. I've tried installing 3 different JDK and none of them will let me install the Android SDK.
Edit: I found a fix to my problem. The Android SDK wasn't detecting JDK, all I had to do was click back then next, WTF...
shilent said:
Edit: I found a fix to my problem. The Android SDK wasn't detecting JDK, all I had to do was click back then next, WTF...
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Isn't that maddening? That pissed me off so bad. I was like come on! Who uses the freaking back button? I mean really?
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dbm0361 said:
I'm on stock 2. 3. 4 s -off and can't flash cw
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Have you tried mark manning's mod located Here? I believe this would help you with your problem.
I flashed the. Bootloader but get permissions failed on cwm install
http://forum.xda-developers.com/showthread.php?p=16276020
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[Q] Lost Root.. can't regain... HELP

Ok, so my wife's phone has to go back to TMOBILE by Friday Sept 21st, I have Virtuous Affinity on it and I Unrooted with VISIONary not thinking that i should have flashed something stock first. I now cannot regain root for some reason using VISIONary or even flashing a PD15IMG through bootloader,,, I'm not comfortable at all with ADB, please help if there is another way. Anyone?
Calming
Is your phone still s-off?
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Visionary only roots the ROM. If you're still S-Off you have the ability to write to the partitions through adb or recovery.
Tell us what happens when you try to flash PD15IMG.zip
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Still s-off... Flashing the P15IMG shows the progress bar on the right, then either reboots in its own or I reboot it... Still goes back to custom Rom.
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calming said:
Still s-off... Flashing the P15IMG shows the progress bar on the right, then either reboots in its own or I reboot it... Still goes back to custom Rom.
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Did you verify the md5? You could have a bad download.
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estallings15 said:
Did you verify the md5? You could have a bad download.
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I downloaded multiple versions including the 2.2.1, 2.3.4, and 2.34 (new) version... all those did similiar things, still not getting me back to stock. Does it make a difference that I have a custom rom with 2.3.5 on it?
Any other thoughts?
calming said:
I downloaded multiple versions including the 2.2.1, 2.3.4, and 2.34 (new) version... all those did similiar things, still not getting me back to stock. Does it make a difference that I have a custom rom with 2.3.5 on it?
Any other thoughts?
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Why would it make a difference? Also, if it did, I would have asked you about it.
The only reason a good download will not install, usually, is if either you're on an unlocked bootloader from htc-dev, or something is wrong with either your bootloader or phone.
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