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Possible to downgrade 3.1 to 3.0?

alansaysstop said:
how do you accidently upgrade your phone to a firmware thats not released to the general public?:rolleyes:
Click to expand...

Um, I thought 3.1 is already a part of iTunes. Thankfully, I know better than to upgrade my unlocked iPhone, but I'm trying to help a friend who accidently did it.
 
daleski75 said:
1. Put the phone in DFU mode
2. Restore 3.0 firmware
3. Get error 1500 when finished
5. Hold BOTH the Power and the Home button for 15 seconds
6. Let go of both buttons
7. Press and hold the power button again for 2 seconds

This may need a few attempts (5-7) but then it should work.

BUT you will need to do steps 5-7 even if you restore the same firmware again.
Click to expand...


Okay peeps, I got it and it's simple. I don't know what the error 1500 is, because I did not see that.

Note: This is for 2G only. I repeat 2G (1st Generation iPhone) (aluminum back). If you've upgraded to 3.1 accidentally you will not see any restore button in iTunes, thus the headache. So, to downgrade back to FW 3.0 so you can jailbreak and unlock:

Note: This method was done on a Mac Mini, running Tiger 10.4.11

1. Put phone in DFU mode (instructions available elsewhere)
2. Connect to iTunes 8.2 (you should now see a restore button)
3.a Option-restore, I repeat, option-restore (hold down option then click restore) and navigate to a valid FW 3.0 custom restore file
3.b The restore file, Bl 3.9 and Bl 4.6, and redsn0w you should already have in a folder, see:
http://www.iclarified.com/entry/index.php?enid=4304
4. This should successfully downgrade your 2G phone
5. Run redsn0w, follow the instructions, and do not interrupt, this will take a while, make sure your battery does not run down if doing it from a laptop.

You're done!

Similar instructions may, or may not, work for iPhone 3G.
 
I was stupid

I did it on purpose all by myself no Butler. Champnt could you tell me your exact step you used to successfully downgrade to 3.0 from 3.1. I also get the 1015 error. I'm trying to downgrade a 3GS iphone.

Thanks
 
philg4d@mac.com said:
I did it on purpose all by myself no Butler. Champnt could you tell me your exact step you used to successfully downgrade to 3.0 from 3.1. I also get the 1015 error. I'm trying to downgrade a 3GS iphone.

Thanks
Click to expand...

1. Put the phone in DFU mode (Hold power button and home button for 15 seconds and then release power button and BUT KEEP HOLDING THE HOME BUTTON)

2. Restore 3.0 firmware (Click shift and restore and do a restore of this firmware iPhone2,1_3.0_7A341_Restore.ipsw)

3. When it finishes you will get an error. Click ok and exit iTunes.

4. After you got that error use QuickPwn-225 (http://www.quickpwn.com/2009/01/official-quickpwn-221-and-pwnagetool-jailbreak-for-windowsmac.html). When you use quickpwn it will tell you to to hold the power and home button for 15 seonds. Then release both buttons and then hold the power button for 2 seconds.

5. You are done.
 
champnt said:
1. Put the phone in DFU mode (Hold power button and home button for 15 seconds and then release power button and BUT KEEP HOLDING THE HOME BUTTON)

2. Restore 3.0 firmware (Click shift and restore and do a restore of this firmware iPhone2,1_3.0_7A341_Restore.ipsw)

3. When it finishes you will get an error. Click ok and exit iTunes.

4. After you got that error use QuickPwn-225 (http://www.quickpwn.com/2009/01/official-quickpwn-221-and-pwnagetool-jailbreak-for-windowsmac.html). When you use quickpwn it will tell you to to hold the power and home button for 15 seonds. Then release both buttons and then hold the power button for 2 seconds.

5. You are done.
Click to expand...

I have the same problem, I updated my 3G to 3.1, didn't like it, tried to downgrade, messed it up.

I did the first 3 steps but Quickpwn didn't recognize my phone.
 
champnt said:
Firmware 3.1 works, just can't get my mms to work. I am on a developers account.
Click to expand...

Are you a developer?

A. You should know that you NEVER install a beta OS on your main phone
B. You should be asking this in the official developer forums.
 
Thanks!

Downgrade went smoothly! I used quickpwn on my parallels win xp! Only issue is I can't get my mms back but at least I got tethering back! : |
 
If the only reason you want to downgrade from 3.1 to 3.0 is for mms, just call AT&T and have them re-sync your phone with the network. Throughout the 3.0 betas that issue came up and a call to Tech Support got it working again.
 
Note that when you downgrade, your previous backup is no longer able to be restored, since it was created under a higher OS version.
 
Woohoo got my iphone 3GS Back

Simply after the restore errors out with error 1015 quit iTunes and lunch
purplera1n (I used the new mac version just released today) press the Let it
Rain button and the iphone reboots in 3.0. Thants it.
 
philg4d@mac.com said:
Simply after the restore errors out with error 1015 quit iTunes and lunch
purplera1n (I used the new mac version just released today) press the Let it
Rain button and the iphone reboots in 3.0. Thants it.
Click to expand...

Holy ****, that was easy. Thanks for the heads up.
 
dylanthomas said:
I have the same problem, I updated my 3G to 3.1, didn't like it, tried to downgrade, messed it up.

I did the first 3 steps but Quickpwn didn't recognize my phone.
Click to expand...



quickpwn is not suppose to recognize your 3G (3.0)... when u get the error in itunes, click ok on the error, then close itunes. Run quickpwn 2.2.5 and holdon town power & home for 10 seconds. Release home and continue holding power for 2 more seconds. iTunes should recognize your phone and should be running back on 3.0.

I put 3.1 beta on mine (got it off torrent) and I wanted to put 3.0 back on because I was selling the phone (have 3gs). Before reading this thread, I tried to put 3.0 by putting phone into DFU mode but I kept getting error. So then I tried to restore it with 3.1 and it locked me out. iTunes kept prompting that I needed to register the phone to developers program. So I followed the above instructions, had the phone in DFU mode, selected 3.0 firmware and once I got the same error again, I closed the itunes and opened up quickpwn 2.2.5.

So this worked for me.
 
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