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DOWNGRADE HBOOT 0.92 Froyo 2.2 to HBOOT 0.80 Eclair 2.1


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#1
LUTRAM

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


http://www.tolxdorff...torials/?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

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#2
Sammy83

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Thank you for posting my guide here too :)
I haven't found the time to made it :D

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ROM: OpenDesire 3.0.5
Firmware version: 2.2 | Build number: 2.09.405.8 CL218634-release-keys
Kernel Version: 2.6.32.15-gf9c0527 htc-kernel@and18-2#1 | Baseband version: 32.43.00.32U_5.09.00.20
HBOOT: 0.80.0000 again :)

#3
LUTRAM

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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

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#4
Vistrix

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Can this be used to downgrade 0.83 HBOOT?

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#5
SavageCore

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Can this be used to downgrade 0.83 HBOOT?


http://forum.xda-dev...ad.php?t=747393
Some people have success stories but I wouldn't.

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#6
pete.major

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http://forum.xda-dev...ad.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

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---------------------
Currently:
HTC Desire
Previously:
Acer A1 Liquid,
iPhone 3G, HTC TyTN II,
HTC TyTN, XDA Mini S,
XDA IIi, SPV C500,
SPV E200, SPV E100
---------------------

#7
Vistrix

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

I guess I'll wait it out!

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#8
sorchard

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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?

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#9
pete.major

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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...

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---------------------
Currently:
HTC Desire
Previously:
Acer A1 Liquid,
iPhone 3G, HTC TyTN II,
HTC TyTN, XDA Mini S,
XDA IIi, SPV C500,
SPV E200, SPV E100
---------------------

#10
sudeki300

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

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#11
sorchard

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


http://forum.xda-dev...amp;postcount=9

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#12
Sammy83

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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" :)

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ROM: OpenDesire 3.0.5
Firmware version: 2.2 | Build number: 2.09.405.8 CL218634-release-keys
Kernel Version: 2.6.32.15-gf9c0527 htc-kernel@and18-2#1 | Baseband version: 32.43.00.32U_5.09.00.20
HBOOT: 0.80.0000 again :)

#13
SavageCore

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http://forum.xda-dev...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.

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#14
amorajab

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it dosent work after my phone load the file :
update fail
main ver is older
:P

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#15
mrshark

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[HOWTO] Downgrade Froyo (2.2) to Stock 2.1 (ANY HBOOT | WIN/LINUX/MAC | ROOT)
http://forum.xda-dev...ad.php?t=768256

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#16
amorajab

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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

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#17
Droidzone

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


http://www.tolxdorff...torials/?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 by Droidzone, 25 November 2010 - 04:44 PM.

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#18
Invisible Elf

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

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#19
OSF-Vector

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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 by OSF-Vector, 05 March 2012 - 08:40 PM.

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