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March 19th, 2009, 14:34 GMT · By

Developer Corrects iPhone 3.0 'Lies' on 2.2.1 Downgrade, 3G Unlock

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iPhone OS 3.0 Home screen (iPod touch 2G)
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A forum post entitled “3.0 LIES corrected by an Apple Dev!” has caught our eye. The poster claims to be a registered Apple developer who was eager to correct some misinformation (rumors) related to the installation of OS 3.0 on a 3G handset, and more.

“I am a registered Apple Dev and I just want to correct some issues I have with the misinformation going around,” the post begins. “First of all you CAN downgrade back to 2.2.1 easily. There are guides but all you need to do is restore to 2.2.1 in DFU mode in windows [sic], then when itunes [sic] gives you an error message just press ok and reboot the phone (just a regular power off and power on). Then quickpwn 2.2.1 as normal. DONE. I have done this several times myself and it is confirmed.”

Also noted by the developer is that “you do NOT have to be a dev to be able to sync properly with 3.0 on a 3g online or offline with itunes [sic],” adding (in a post edit) that “each developer is allowed 100 devices total in the Apple Developer Portal [...] All you need to do is know a dev (like me) who will charge you $5 and add your UDID to their list of 100 devices,” the developer claims. “The UDID feature was created so you could distribute ADHOC apps to people who want to beta test for you. I am legally allowed to add whoever I want to my UDID list,” he writes.

The forum user also points out what the iPhone Dev Team has already confirmed, namely that “if you don't need to unlock your 3g (AT&T Users) then you can upgrade your baseband and not worry about a thing.” The developer pledges to this confirming his own attempts were successful. However, “IF YOU NEED TO UNLOCK YOUR 3G DO NOT UPGRADE TO 3.0 until the pwnage tool is released in the summer when the firmware will be released to the people who are not lucky enough to get their UDID's added before then,” the developer adds.

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READER COMMENTS:


Comment #1 by: Chris M on 20 Mar 2009, 13:29 UTC reply to this comment

Its hardly lies now is it. You have to use hacking software to roll back to 2.2.1 and you are unable to use official firmwares to upgrade the handset untill the official 3.0 update comes out.


Comment #2 by: Christopher P. on 24 Mar 2009, 16:56 UTC reply to this comment

Chris M - this is not true at all, you can restore and not use quickpwn at all, and use the official IPSW.


Comment #3 by: yawuz on 25 Mar 2009, 07:56 UTC reply to this comment

I cant back downgrade to 2.2.1. Im upgrade 3.0 beta. So its good but i cant back to 2.2.1. iTunes give error "1604". Im download 2.2.1 IPSW and use QPWN. Its not working. Before 3.0 beta (using 2.2.1) im use QPWN already.

Now i guess i cant back until yellowsn0w :((

Comment #3.1 by: Joe on 02 Apr 2009, 18:40 GMT

if you get 1604 instead of the expected 1013, you did not successfully achieve DFU mode. Power+Home for exactly 10 seconds, then release Power until iTunes recognizes. You will know you are in DFU if you do not see anything on the phone. If you see the USB picture, you are in Restore, not DFU.


Comment #4 by: mobster on 30 Mar 2009, 00:06 UTC reply to this comment

I have downgraded from 3.0 to 2.2.1 and my 3g keep turn off when the phone is a sleep heeeeeeeeeeeelllllllllllllllllllllllllppppppppppppppppppppppp


Comment #5 by: Unlock iPhone 3G on 02 Apr 2009, 21:52 UTC reply to this comment

My iPhone 3G also turns off occasionally since downgrading back to 2.2.1, anyone have a solution?


Comment #6 by: Joshya on 05 Apr 2009, 14:10 UTC reply to this comment

thanks Joe alot!
i must remember DFU mode not recovery mode, also the errors, which is fine and which is not


Comment #7 by: andy on 12 Jun 2009, 21:33 UTC reply to this comment

Hello, i just want to downgrade my iphone from 3 S to 2.2.1 software. its a UK phone. and following the above mentioned procedure, i am getting an error of 1013...
Pls helllppppppp...........asap


Comment #8 by: tim on 05 Jul 2009, 11:15 UTC reply to this comment

couldnt configure pre-dependent dpkg for grep, probably a dependency cycle

it says this everytime i try to install winterboard and all sources


Comment #9 by: grim on 04 Aug 2009, 09:35 UTC reply to this comment

how can i unlock if i go back to 2.2.1 if my boot loader is changed will ultrasnow work??

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