Root How to revert back to an earlier version of HBOOT

[adrynalyne]

This mostly applies to folks who have flashed the leaked ota and want to go back to legit stock. There is generally a problem with that, because we cannot use the RUU due to the upgraded Hboot (no radio has nothing to do with it).

Through my travels, I found a way to do it.

This is not without its risks, and I take no responsibility for any broken phones, knocked up cats, or homeless hamsters caused from the havoc it may wreak.

It did work for me, quite well. I was able to flash to an old RUU without issue like nothing ever happened.

First, the link I used, and then the english version.

[HOW-TO] Downgrade HBOOT - HTCPedia.com forums

Need the RUU?
http://www.mediafire.com/?ld1gm3bbddcbwdw

Now, my instructions, which will hopefully simplify it. I take no credit for this by the way, credit is due to the original thread.

1. Download and unzip the files I have attached to this thread and put them somewhere that you can push them with adb.
2. You must used Unrevoked's latest tool to install clockwork.
3. Boot into clockwork recovery, go to partitions, and mount data.
4. Type this code:

adb push flash_image /data
adb push mtd0.img /data
adb shell
chmod 777 /data/flash_image
cd /data
flash_image misc mtd0.img
exit
adb reboot oem-78

Watch for your phone to reboot to a silver HTC logo.

Then type:

fastboot devices

Verify your device shows up/responds/etc.

Start the RUU. It will complain that battery life is too low to continue. Hit Exit, and it will reboot your phone. Run the RUU again. It should successfully flash your phone, downgrading you successfully.


Having troubles with the RUU giving connection errors? Do this.

Go to start, and in the search/run box, type

%temp%

Delete all that you can. Make sure the RUU is not running in the background.

Now run the RUU again. Once it starts to the first screen, it has extracted the files to the temp directory. You can then copy them to a safe place. It will be a long winded numbered folder, with a similar subfolder.

Once you have copied it to a safe place, you can then copy adb.exe, fastboot.exe, and adbwinapi.dll from the latest SDK into it, overwriting the older copies. Then start the RUU by executing ARUWizard.exe. This fixed the problem for me.

You can also rename the rom.zip contained within the extracted files to PB31IMG.zip and put it on your sd card. Booting to HBOOT will scan it and offer to install.





Good luck!

 

[contagous]

This mostly applies to folks who have flashed the leaked ota and want to go back to legit stock. There is generally a problem with that, because we cannot use the RUU due to the upgraded Hboot (no radio has nothing to do with it).

Through my travels, I found a way to do it.

This is not without its risks, and I take no responsibility for any broken phones, knocked up cats, or homeless hamsters caused from the havoc it may wreak.

It did work for me, quite well. I was able to flash to an old RUU without issue like nothing ever happened.

First, the link I used, and then the english version.

[HOW-TO] Downgrade HBOOT - HTCPedia.com forums

Now, my instructions, which will hopefully simplify it. I take no credit for this by the way, credit is due to the original thread.

1. Download and unzip the files I have attached to this thread and put them somewhere that you can push them with adb.
2. You must used Unrevoked's latest tool to install clockwork.
3. Boot into clockwork recovery, go to partitions, and mount data.
4. Type this code:

adb push flash_image /data
adb push mtd0.img /data
adb shell
chmod 777 /data/flash_image
cd /data
flash_image misc mtd0.img
exit
adb reboot oem-78

Watch for your phone to reboot to a silver HTC logo.

Then type:

fastboot devices

Verify your device shows up/responds/etc.

Start the RUU. It will complain that battery life is too low to continue. Hit Exit, and it will reboot your phone. Run the RUU again. It should successfully flash your phone, downgrading you successfully.


Having troubles with the RUU giving connection errors? Do this.

Go to start, and in the search/run box, type

%temp%

Delete all that you can. Make sure the RUU is not running in the background.

Now run the RUU again. Once it starts to the first screen, it has extracted the files to the temp directory. You can then copy them to a safe place. It will be a long winded numbered folder, with a similar subfolder.

Once you have copied it to a safe place, you can then copy adb.exe, fastboot.exe, and adbwinapi.dll from the latest SDK into it, overwriting the older copies. Then start the RUU by executing ARUWizard.exe. This fixed the problem for me.





Good luck!

So this is easiest way to go back to RUU, so can apply update and re-root?

 

[yojoe600]

good to know thanks you have always been awesome

 

[adrynalyne]

So this is easiest way to go back to RUU, so can apply update and re-root?

Well if you haven't applied update yet, you can simply use an RUU without going through this nonsense.

 

[rmk]

Awesome. Has anyone tried this and confirmed it works?

 

[borgey401]

or you can just wait it out since it's most likely the real version of it

 

[SoCalMiles]

confirmed...works...Thanks!

 

[adrynalyne]

or you can just wait it out since it's most likely the real version of it

What if you need warranty work and cannot remove root?


Thats part of the reason I posted it.

 

[borgey401]

What if you need warranty work and cannot remove root?


Thats part of the reason I posted it.

lol forget it nevermind

 

[contagous]

Well if you haven't applied update yet, you can simply use an RUU without going through this nonsense.

Oh awesome this is way to get back even after the update is applied, nice work bro

 

[ganesha71]

I've almost got this working. I had connection problems with the RUU so I copied the files like you said. That worked and I got the battery warning, hit exit and it reboots. I run ARUWizard again and I get the connection problem again?

Any ideas?

 

[DiegoMejia]

Worked for me , i didnt use the exe to revert back though. i used the PB31IMG.zip on the downgrade sticky

 

[adrynalyne]

ganesha, you might be better off using the zip method Diego mentioned. The RUU program is downright finnicky.

 

[hbk5585]

Question, I mount data from clockwork recovery, do I then do adb there or do I restart the phone and then do adb? I can't get it either way, from clockwork, it does it but nothing happens & if I restart the phone, it denys me access to flash image...what am I doing wrong?

NM, whatever I did worked...it let me restore using PB31IMG.zip...that's interesting since it didn't follow exactly what you wrote lol

 

[adrynalyne]

Actually, running it from clockwork did the trick for ya. It doesn't tell you its doing anything, just does it

Please note there are a few ways to do this and my way may not be the best. Good to know the zip method works, because before a couple of you posted about it, I had no idea it would work.

 

[OurWorldsGreatest]

Sorry if this is a dumb question, but what exactly is this "RUU" and where can I get it? I do have the PB31IMG.zip file but I'm not sure how I would implement it after running the commands you posted.

 

[adrynalyne]

Put it on your sdcard and boot into the HBOOT.

 

[Mezmryz03]

Just spent about 20 minutes with adrynalyne trying to fix my screw up and he got me working again with this method. Many thanks for that and if anyone has any questions on how to do it feel free to PM me and I'll be happy to pass on the good deeds.

 

[OurWorldsGreatest]

Put it on your sdcard and boot into the HBOOT.

I did. I was following this tutorial: YouTube - Droid Incredible Downgrade

Basically when just getting into HBOOT it doesn't automatically read the zip like it does for the guy in this video.. and this is where I am stuck. Haven't really heard any suggestions from anyone on any of the forums on how to get past this.

 

[adrynalyne]

If its not reading the zip its either:

In fastboot mode or more likely, corrupt.

 

[OurWorldsGreatest]

If its not reading the zip its either:

In fastboot mode or more likely, corrupt.

I figured out the problem. It was not reading the .zip because my SD card was in FAT format and I had to reformat to FAT32.

Sorry for the redundant questions but since this method worked at unrooting my phone and bringing me back to stock, will this method of flashing the PB31IMG.zip folder also work to bring me back to stock after flashing the leaked OTA or would I have to use your method posted above?

 

[adrynalyne]

This is a one time shot so if you need to revert again, you will need to follow this procedure again.

 

[joepip43]

Thanks to adrynalyne - you saved the day!

 

[Outatime]

Ok this is weird. My SD card is formatted to FAT32. Everything goes like the video up to the point where it checks the zip file. Instead of saying "Do you want to update? Volume up Yes" it is saying "Main Version is older! Update Fail! Do you want to reboot?"

Any ideas where this is going wrong?

 

[wcx86]

I plugged the phone in and enabled debugging but it's still not reading the device. Any suggestions?