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[GUIDE] 2-step unroot back to stock 2.3.4 from s-off and ANY ROM

OP sparksco

3rd July 2012, 06:40 PM   |  #1  
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I noticed a lot of people asking "How do I unroot back to stock 2.3.4 with s-off bootloader when the ruu's will not work with s-off bootloader?"
So in light of this there is a simple way to do this without installing the froyo PG06IMG.zip and going through the hassle of downloading all the firmware OTA's to get back to stock 2.3.4 firmware. I have used this method and it works great. You must be rooted with s-off for this to work. If your running a custom rom that is not sense based or based of the stock HTC sense roms, attempting to run a RUU will fail which makes this method usefull for anyone on any rom

More information can be referenced from HERE

Requirements:

Note: if you rooted using the method from HERE then you should already have all the requirements for this to work.

1) Windows

2) Android SDK

Once you download the sdk place it in the root of your C: drive and rename it to something easy like "android" or "sdk". Go into your sdk\tools folder and double click on the android file or right click on the file and select open. It should open a command prompt and then load the sdk.

INSTALL PLATFORM-TOOLS ONLY!

3) Download and install HTC Sync necessary for drivers in using adb and fastboot

4) Install a md5 utility like WinMD5Free for checking the hashsums of the files.

===============================================

Unrooting back to stock 2.3.4 firmware

WARNING: This will completely unroot your device. I or xda will not be held responsible for anything that may occur to your device if you do not follow the instructions properly. You have been warned!

5) Download the 2.3.4 hboot

Check the MD5sums of the file hboot_0.99.0000.img: 3008853f805b107fda434ce623f43318

If the MD5sums do not match the above numbers DO NOT CONTINUE

Place the file in your platform-tools folder in the android sdk

6) Download the 2.3.4 ruu

Note: MUST DOWNLOAD THIS FILE ON WIFI ONLY BECAUSE OF THE SIZE

Check the MD5sums of the file RUU_Speedy_S_Sprint_WWE_2.77.651.3_Radio_1.08.01.0 111_NV_SPCS_2.97_01206_PRL60674_release_237263_sig ned.exe:
6e624a8ab1e1caa523a547c1fa54953b

Again if the MD5sums don't match the above numbers DO NOT CONTINUE

7)Plug your phone into your usb cable to your PC and make sure "USB debugging" is enabled on your device under Menu >> Settings >> Applications >> Development

open a cmd prompt (start button then type cmd and enter) and cd to your sdk\platform-tools folder.

Example: cd C:\android\platform-tools or cd C:\sdk\platform-tools

8) adb reboot bootloader

Make sure the device is in fastboot mode (a lot of times it's not). It should say fastboot in red letters on the top.

9) fastboot flash hboot hboot_0.99.0000.img

10)fastboot reboot-bootloader

If all goes well you should see "s-on locked"

11) Make sure your phone is in fastboot mode once again. Next run the ruu file and follow the instructions to install the factory images of 2.3.4

Congrats your phone is now back to stock 2.3.4
Last edited by sparksco; 18th August 2012 at 07:11 AM.
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3rd July 2012, 11:52 PM   |  #2  
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I just unrooted my phone yesterday using the 2.3 RUU. Well actually I accidentally used the 2.2 RUU first and when I realized I then used the 2.3 RUU. It worked fine for me doing it that way.
4th July 2012, 12:03 AM   |  #3  
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Quote:
Originally Posted by BigSplit

I just unrooted my phone yesterday using the 2.3 RUU. Well actually I accidentally used the 2.2 RUU first and when I realized I then used the 2.3 RUU. It worked fine for me doing it that way.

This isn't for getting to 2.3.3 it's for 2.3.4...
And you can't even use a ruu on s-off because the bootloader verification fails.
Last edited by sparksco; 4th July 2012 at 12:12 AM.
4th July 2012, 12:13 AM   |  #4  
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Oh sorry, it wasn't the RUU, it was the 2.2 PGxxx zip I flashed in fastboot first. Then used the 2.3 RUU. Same outcome, back to factory 2.3.4 in 2 steps.


...And now it's time to re-root since they replaced my touch screen right there on the spot... I was surprised
Last edited by BigSplit; 4th July 2012 at 12:15 AM.
4th July 2012, 12:15 AM   |  #5  
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Quote:
Originally Posted by BigSplit

Oh sorry, it wasn't the RUU, it was the 2.2 PGxxx zip I flashed in fastboot first. Then used the 2.3 RUU. Same outcome, back to factory 2.3.4 in 2 steps.

No not two steps... This is much faster and easier. And stop changing your story lol. Don't like the method don't use it...
4th July 2012, 08:36 AM   |  #6  
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i thought you could RUU with s-off?
4th July 2012, 08:59 AM   |  #7  
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Quote:
Originally Posted by VICODAN

i thought you could RUU with s-off?

It's basicly the same as this:
http://androidforums.com/evo-v-4g-al...oot-guide.html

Execpt for we're not doing fastboot oem lock'ing our bootloaders. We're just straight up flashing the locked s-on 2.3.4 bootloader so the ruu can think we're already on a stock firmware even though we're not.

Edit: if your running a custom rom attempting to run a ruu can cause a lot of issues which makes this method a lot easier for everyone OP updated with more info.
Last edited by sparksco; 4th July 2012 at 10:00 AM.
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12th July 2012, 08:57 PM   |  #8  
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It appears the link to the 2.3.4 hboot file is dead! Any way you could re-upload it? Please and thank you!
12th July 2012, 09:14 PM   |  #9  
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Quote:
Originally Posted by capn-tightpants

It appears the link to the 2.3.4 hboot file is dead! Any way you could re-upload it? Please and thank you!

Link is fixed I accidentally deleted it from mediafire
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13th July 2012, 09:19 AM   |  #10  
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My screen broke and I need to return my phone to Sprint. I spent 3 hours looking through other unrooting guides until I found yours. Works flawlessly. My most sincere gratitude to you.

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