[HOW-TO] downgrade HBOOT 0.92 to 0.80 again

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Sammy83

Senior Member
Aug 2, 2010
71
1
Essen
!!!! ROOTING/FLASHING/DOWNGRADING IS ALWAYS ON YOUR OWN RISK !!!!
Attention: This method will completely wipe your phone!!!

You can find the reworked Tutorial here: http://android-tutorials.org/
Video of the first step is online: Step 1

Video of the 3 & 4 step is online: Step 3 & 4



Known Problems
If you have problems while re-rooting or custom recovery (unrevoke) try to downgrade again with the above procedure.
Make sure you have made a new goldcard.
If you have problems e.g. 140 ERROR please follow these instructions (thx to raz2133)
This will fix your MISC Partition so you can flash back original RUU files.

Happy re-rooting ;)


P.S. i hope you can understand this because english is not my foreign language
 

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Nitrius

Senior Member
Feb 15, 2009
292
3
This is great, keep up the good work! =)


Edit: Are we sure those that do not have a carrier locked/branded also needs to create a goldcard?
 

SharpSA

Senior Member
Oct 23, 2006
314
11
For everyone how was in bad luck and updated to the original OTA FroYo here is a way how you can revert it.

The User maximini1 has found a thread where they describe how you can downgrade to 0.80 again.

So i try to explain how you have to do it.

Preparation
1. Make a NEW Goldcard (here)
2. Download PB99IMG.zip (here - MIRROR - germany MIRROR2)
3. Rename the downloaded file to "PB99IMG.zip" and copy it onto your SD Card.

Flashing
1. Shutdown yor mobile
2. Hold Volume up and press power
3. wait until PB99IMG.zip was found and checked
4. Press Volume Up <yes> - PICTURE 1
5. Wait until all steps are done. DON't POWER OFF YOUR DEVICE!!! - PICTURE 2
6. After flashing press Volume Up to reboot
7. done

Happy re-rooting ;)

Is it working? Did try anyone?
 
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Nitrius

Senior Member
Feb 15, 2009
292
3
Not sure about that. i had a branded Vodafone version and unbranded it.
If someone could try without goldcard and report here :)

Looks like it's possible for those with an unbranded/unlocked phone:

First of all, I have an unbranded simlock-free phone. All I did was
1. download the file to SD card.
2. rename to PB99IMG.zip
3. boot into recovery (turn phone on while holding down volume)
4. just let it load the zip file and press yes when asked to install

Easy as that!
 

Wheezy_be

Senior Member
Jan 27, 2009
207
44
Sint-Truiden
de-ruyter.be
Ok, I never rooted my android before and I have the OTA 2.2 Froyo update on an unbranded Desire. After I complete these steps, what do I need to do to install a custom rom?

Thanks!
 

Nitrius

Senior Member
Feb 15, 2009
292
3

u9dbg

Member
Feb 22, 2008
5
0
Ok for the dumb and ignorant among us (a.k.a me) what state does this leave your phone in.

I get I downgrade HBOOT to 0.80 and my phone will be wiped, but what ROM will be on the phone after the downgrade will it still be the OTA rom or will it be another one?

Or do I then need to install a ROM of my choice after the downgrade, sorry if this is a really stupid question, I haven't put any custom ROM on my Desire yet and then I got the OTA update as I was thinking about checking out some custom stuff. Not had the phone long.

Thanks.

{EDIT} someone beat me to it as I was typing this post thanks for the above! :)
 
Last edited:

Sammy83

Senior Member
Aug 2, 2010
71
1
Essen
Ok for the dumb and ignorant among us (a.k.a me) what state does this leave your phone in.

I get I downgrade HBOOT to 0.80 and my phone will be wiped, but what ROM will be on the phone after the downgrade will it still be the OTA rom or will it be another one?

Or do I then need to install a ROM of my choice after the downgrade, sorry if this is a really stupid question, I haven't put any custom ROM on my Desire yet and then I got the OTA update as I was thinking about checking out some custom stuff. Not had the phone long.

Thanks.

After you've done the steps above you will have the following:

Blank and wiped device
Firmware: 2.1-update1 UNROOTED!
HBOOT: 0.80
Basband(Radio): 32.36.00.28U_4.06.00.02_2
Kernel: [email protected]#1
Build: 1.21.405.2 CL174215 release-keys

With that you can root and flash anything you want
 

pexon

Senior Member
May 21, 2010
253
16
Amsterdam
Well, if this works AdamG doesn't have to find a way to root hboot 0.92.
:/

Sent from my HTC Desire using XDA App
 

Jitsufreak

New member
Jul 26, 2010
1
0
Has anyone tried this on a branded, but rooted phone?

I've got an O2 branded desire with hb00t 0.83, I can root with unrevoked, but can't boot into recovery =( Hoping this will fix it.
 

gascanieto

Senior Member
Apr 12, 2010
77
0
London
Ok for the dumb and ignorant among us (a.k.a me) what state does this leave your phone in.

I get I downgrade HBOOT to 0.80 and my phone will be wiped, but what ROM will be on the phone after the downgrade will it still be the OTA rom or will it be another one?

Also for me, it's Volume Down + Power
 

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  • 1
    !!!! ROOTING/FLASHING/DOWNGRADING IS ALWAYS ON YOUR OWN RISK !!!!
    Attention: This method will completely wipe your phone!!!

    You can find the reworked Tutorial here: http://android-tutorials.org/
    Video of the first step is online: Step 1

    Video of the 3 & 4 step is online: Step 3 & 4



    Known Problems
    If you have problems while re-rooting or custom recovery (unrevoke) try to downgrade again with the above procedure.
    Make sure you have made a new goldcard.
    If you have problems e.g. 140 ERROR please follow these instructions (thx to raz2133)
    This will fix your MISC Partition so you can flash back original RUU files.

    Happy re-rooting ;)


    P.S. i hope you can understand this because english is not my foreign language
    1
    For everyone how was in bad luck and updated to the original OTA FroYo here is a way how you can revert it.

    The User maximini1 has found a thread where they describe how you can downgrade to 0.80 again.

    So i try to explain how you have to do it.

    Preparation
    1. Make a NEW Goldcard (here)
    2. Download PB99IMG.zip (here - MIRROR - germany MIRROR2)
    3. Rename the downloaded file to "PB99IMG.zip" and copy it onto your SD Card.

    Flashing
    1. Shutdown yor mobile
    2. Hold Volume up and press power
    3. wait until PB99IMG.zip was found and checked
    4. Press Volume Up <yes> - PICTURE 1
    5. Wait until all steps are done. DON't POWER OFF YOUR DEVICE!!! - PICTURE 2
    6. After flashing press Volume Up to reboot
    7. done

    Happy re-rooting ;)

    Is it working? Did try anyone?
    1
    The Download links are now dead (understandable after this amount of time) and I need to downgrade my Desire from the Official 2.3.3 update so that I can root my phone. Where can I go from here to downgrade?

    You could just use revolutionary to S-off?
    http://revolutionary.io/
    Isn't it compatible with the "new" 1.02.0001 hboot|?