DOWNGRADE HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1

[Guest LUTRAM]

Step by step guide to downgrade HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1

http://www.tolxdorff.net/tutorials/?step=0

Quick Reference:

How to downgrade your HTC Desire from HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1

Requirements

1. Make a NEW Goldcard (here) depending on your device (branded or not)

2. Download PB99IMG.zip

3. Rename the downloaded file to PB99IMG.zip [NOT zip.zip !!!] and copy it to your SD Card.

4. Download this misc_update.zip to repair your misc partition in Step 3 and copy it to your SD card.

5. Download your desired ROM and copy it to your SD Card. Don't name it update.zip!

Step 1 - downgrade

1. Shutdown your device

2. Hold volume DOWN and press power button

3. Wait until PB99IMG.ZIP was found and verfied.

4. Press volume UP to start the update.

5. Wait until all steps are done. DON'T POWER OFF YOUR DEVICE!

6. After the downgrade progress has finished press volume UP to reboot.

7. done -> continue..

Step 2 - root with unrevoke recovery

1. Uninstall HTC Sync completely

2. Download unrevoke recovery here

3. Download the unrevoke recovery USB driver here and install them!

4. Enable USB debugging on your phone.

5. Start unrevoke and follow the instructions

6. If unrevoke has finished you should be in custom recovery.

7. Continue with the next step...

Step 3 - repair /misc partition

1. You are still in custom recovery mode

2. Select 'install zip from sdcard' (Use Vol + and - to navigate and trackball)

3. Select 'choose zip from sdcard'

4. Select 'misc_update.zip' from SD und confirm it with yes.

5. After that your /misc partition should be repaired

6. Go Back to custom Recovery menu.

7. Continue with the next step...

Step 4 - flash custom or stock ROM

1. You are still in custom recovery mode

2. Select 'install zip from sdcard' (Use Vol + and - to navigate and trackball)

3. Select 'choose zip from sdcard'

4. Select your desired ROM Zip-file from SD und confirm it with yes.

5. After the flashing progress has finished use the back key and then select reboot.

6. Congratulations. Now you have a re-rooted HTC Desire with HBOOT 0.80

[Guest Sammy83]

Thank you for posting my guide here too :)

I haven't found the time to made it :D

[Guest LUTRAM]

Thank you for posting my guide here too :)

I haven't found the time to made it :D

ya welcome! nice to have it all in one place:P

[Guest Vistrix]

Can this be used to downgrade 0.83 HBOOT?

[Guest SavageCore]

Can this be used to downgrade 0.83 HBOOT?

http://forum.xda-developers.com/showthread.php?t=747393

Some people have success stories but I wouldn't.

[Guest pete.major]

http://forum.xda-developers.com/showthread.php?t=747393

Some people have success stories but I wouldn't.

Only one person has had success from 0.83 and many haven't

I would definately NOT recommend this for 0.83 unless you're very brave

[Guest Vistrix]

Ah thanks. This phone definitely has the new SLCD screen, I compared it with a mates phone.

I guess I'll wait it out!

[Guest sorchard]

As someone who never installed the official 2.2 update and has an old AMOLED phone, why do people seem so keen to downgrade 0.83 to 0.80?

There are several reports that 0.83 is rootable. So why downgrade?

[Guest pete.major]

As someone who never installed the official 2.2 update and has an old AMOLED phone, why do people seem so keen to downgrade 0.83 to 0.80?

There are several reports that 0.83 is rootable. So why downgrade?

Really? Where'd you read that? I'd be grateful if you could provide a linky...

[Guest sudeki300]

where the word " here " is on the steps on post 1 there are no links attached was there supposed to be any?..........................sudeki300

[Guest sorchard]

Really? Where'd you read that? I'd be grateful if you could provide a linky...

http://forum.xda-developers.com/showpost.p...amp;postcount=9

[Guest Sammy83]

where the word " here " is on the steps on post 1 there are no links attached was there supposed to be any?..........................sudeki300

Look at the first post of this thread. there is a link on top. Follow this link!

All other text was just copy/pasted by LUTRAM thats wha there are no links when it says "here" :)

[Guest SavageCore]

http://forum.xda-developers.com/showpost.p...amp;postcount=9

Yeah it appears that downgrades/root work fine IF you have an AMOLED.

I have contacted unrevoked to see if they're aware of the problems with SLCD screens.

[Guest amorajab]

it dosent work after my phone load the file :

update fail

main ver is older

:P

[Guest mrshark]

[HOWTO] Downgrade Froyo (2.2) to Stock 2.1 (ANY HBOOT | WIN/LINUX/MAC | ROOT)

http://forum.xda-developers.com/showthread.php?t=768256

[Guest amorajab]

tanx sir but i want Downgrade it to bootloader.8 cus root hboot .83 has a high risk :P (some of my firnds did it and brick phones)

and i dont know how i can root hboot .83

[Guest Droidzone]

Step by step guide to downgrade HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1

http://www.tolxdorff.net/tutorials/?step=0

Quick Reference:

How to downgrade your HTC Desire from HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1

The original post seems to have been taken down. Any links to the files needed would be nice

Edited November 25, 2010 by Droidzone

[Guest Invisible Elf]

Why would you downgrade hboot, just use unrevoked if you need root

[Guest OSF-Vector]

The original post seems to have been taken down. Any links to the files needed would be nice

Yes please :o

sorry for gravedig didnt notice but this would be really helpful :L

Edited March 5, 2012 by OSF-Vector