[Paul iPhone]

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How to Downgrade iPhone Firmware 3.0 to 2.2.1
written by Sandip on March 19, 2009
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After watching iPhone Firmware 3.0 preview I am sure many users would have attempted to download leaked iPhone Firmware 3.0 and upgraded their iPhone 3G to firmware 3.0. But one thing you should know before attempting to do this is that you need to have your iPhone UUID registered with apple to try Beta Firmware 3.0 and its illegal to download leaked version of Firmware 3.0

Anyways if you have already ended up upgrading your iPhone 3G firmware 3.0 and feeling to downgrade back to Firmware 2.2.1 then follow below guide, however you must know you can only downgrade your iPhone Firmware 3.0 but not baseband 04.20.01.
How to Downgrade iPhone Firmware 3.0 to 2.2.1
1. Connect your iPhone to your Mac or PC and select your iPhone from the list of devices in iTunes

2. If iTunes does not detect your iPhone then you will need to put it in DFU (Device Firmware Upgrade) mode.

3. Browse the Summary Tab,

Mac Users,

Hold down Option and press the “Restore” button

Windows Users,

Hold down Shift and press the Restore button

4. Now browse the folder where you have the iPhone firmware.Select the firmware & hit the restore button and cross your fingers for 5 minutes.

5. Ignore error message like 1011, 1013, 1015 (Actually the firmware 2.2.1 is already successfully installed)

6. Use QuickPWN 2.2.5 to Jailbreak iPhone Firmware 2.2.1

Steps to put iPhone in DFU mode

1. Connect your iPhone to your computer.

2. Turn iPhone off.

3. Hold power and home together for 10 seconds (exactly).

4. Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.

5. A few seconds later iTunes should detect your iPhone.

Please Note :- If you encountered with error message like 1601, 1602, 1600 or anything else then try putting the
iPhone into DFU mode and try again.

How to Downgrade iPhone Firmware 3.0 to 2.2.1 (iPhone 3G/2G)

source

[Paul iPhone]

Originally Posted by marcodenardi

Hello

I updatet my IPhone from 2.2.1 to 3.0 and now i don't have a service anymore. Has anyone the same problem?

Greez
Marco

ummm restore the firmware again then jailbreak only no activate after that use iutilities for more info go to page 7 blucity's post

RapidShare: Easy Filehosting

hope it helps cheers!!!

[Paul iPhone]

saurik is workin on this just wait for it

[Paul iPhone]

Originally Posted by randomized

utilities are the only ones that work? and if so, how many of them all work?

it worked for me RapidShare: Easy Filehosting just download install run change the firmware string activate via itunes
NOTE!!! use quickpwn jailbreak only no activate!! okkkk

[Paul iPhone]

Originally Posted by $C-Money$

So this will work with my 3g iphone? I have it jailbroken to 2.2.1 and its AT&T, will i be able to use all the 3,0 features and have service? I could care less about the jailbreak 3.0, i just want to use 3.0 and NO IM NOT ON THE APPLE DEV. So will it still worK?

do this restore 3.0 betas firmware jailbreak no activate after that use iutilites RapidShare: Easy Filehosting for more info go to page 7 of the forums bluecity's post

[Paul iPhone]

well downgrade back and wait for the official release!!!! how to downgrade back
How to Downgrade iPhone Firmware 3.0 to 2.2.1
written by Sandip on March 19, 2009
ADVERTISEMENTS

After watching iPhone Firmware 3.0 preview I am sure many users would have attempted to download leaked iPhone Firmware 3.0 and upgraded their iPhone 3G to firmware 3.0. But one thing you should know before attempting to do this is that you need to have your iPhone UUID registered with apple to try Beta Firmware 3.0 and its illegal to download leaked version of Firmware 3.0

Anyways if you have already ended up upgrading your iPhone 3G firmware 3.0 and feeling to downgrade back to Firmware 2.2.1 then follow below guide, however you must know you can only downgrade your iPhone Firmware 3.0 but not baseband 04.20.01.
How to Downgrade iPhone Firmware 3.0 to 2.2.1
1. Connect your iPhone to your Mac or PC and select your iPhone from the list of devices in iTunes

2. If iTunes does not detect your iPhone then you will need to put it in DFU (Device Firmware Upgrade) mode.

3. Browse the Summary Tab,

Mac Users,

Hold down Option and press the “Restore” button

Windows Users,

Hold down Shift and press the Restore button

4. Now browse the folder where you have the iPhone firmware.Select the firmware & hit the restore button and cross your fingers for 5 minutes.

5. Ignore error message like 1011, 1013, 1015 (Actually the firmware 2.2.1 is already successfully installed)

6. Use QuickPWN 2.2.5 to Jailbreak iPhone Firmware 2.2.1

Steps to put iPhone in DFU mode

1. Connect your iPhone to your computer.

2. Turn iPhone off.

3. Hold power and home together for 10 seconds (exactly).

4. Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.

5. A few seconds later iTunes should detect your iPhone.

Please Note :- If you encountered with error message like 1601, 1602, 1600 or anything else then try putting the
iPhone into DFU mode and try again.
How to Downgrade iPhone Firmware 3.0 to 2.2.1 (iPhone 3G/2G) source

[kevv8705]

if you dont want your beta 3.0 anymore, can u just plug ur iphone into itunes and restore?

[Paul iPhone]

Originally Posted by kevv8705

if you dont want your beta 3.0 anymore, can u just plug ur iphone into itunes and restore?

heres a full tutorial After watching iPhone Firmware 3.0 preview I am sure many users would have attempted to download leaked iPhone Firmware 3.0 and upgraded their iPhone 3G to firmware 3.0. But one thing you should know before attempting to do this is that you need to have your iPhone UUID registered with apple to try Beta Firmware 3.0 and its illegal to download leaked version of Firmware 3.0

Anyways if you have already ended up upgrading your iPhone 3G firmware 3.0 and feeling to downgrade back to Firmware 2.2.1 then follow below guide, however you must know you can only downgrade your iPhone Firmware 3.0 but not baseband 04.20.01.
How to Downgrade iPhone Firmware 3.0 to 2.2.1
1. Connect your iPhone to your Mac or PC and select your iPhone from the list of devices in iTunes

2. If iTunes does not detect your iPhone then you will need to put it in DFU (Device Firmware Upgrade) mode.

3. Browse the Summary Tab,

Mac Users,

Hold down Option and press the “Restore” button

Windows Users,

Hold down Shift and press the Restore button

4. Now browse the folder where you have the iPhone firmware.Select the firmware & hit the restore button and cross your fingers for 5 minutes.

5. Ignore error message like 1011, 1013, 1015 (Actually the firmware 2.2.1 is already successfully installed)

6. Use QuickPWN 2.2.5 to Jailbreak iPhone Firmware 2.2.1

Steps to put iPhone in DFU mode

1. Connect your iPhone to your computer.

2. Turn iPhone off.

3. Hold power and home together for 10 seconds (exactly).

4. Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.

5. A few seconds later iTunes should detect your iPhone.

Please Note :- If you encountered with error message like 1601, 1602, 1600 or anything else then try putting the
iPhone into DFU mode and try again.
How to Downgrade iPhone Firmware 3.0 to 2.2.1 (iPhone 3G/2G)

source!

[kevv8705]

i think i messed up big time, cuz i didnt do that whole process the first time and i just tried restoring it. and now it wont work.

[Paul iPhone]

u could download winterboard but!!!! dont access cuz it will hang up just wait for the update ok ********** let me try i downloaded it but my iphone hanged so
ill make it another try!