Many users have accidentally upgraded to firmware 2.2.1 on their devices and they have lost their jailbreak. People repeatedly keep asking how to downgrade firmware 2.2.1 to 2.2 in the QuickPWN Forums.
vicon-sd posted a great guide on how to downgrade in the forums at this topic:
Upgraded to 2.2.1? Here’s how to downgrade!
Here is how you can downgrade from firmware 2.2.1 to 2.2:
* Connect your iPhone to your Mac or PC and select your iPhone from the list of devices in iTunes. If things had gone horribly wrong while hacking your iPhone and iTunes does not detect your iPhone then you will need to put it in DFU (Device Firmware Upgrade) mode.
o You can follow these steps to put your iPhone in DFU mode (this is required only if iTunes does not recognize your iPhone):
+ Connect your iPhone to your computer.
+ Turn iPhone off.
+ Hold power and home together for 10 seconds (exactly).
+ Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
+ A few seconds later iTunes should detect your iPhone.* In the Summary Tab, Hold down Option and press the “Restore” button. If you are using Windows hold down Shift and press the Restore button. (This is an important step as just pressing the “Restore” button will result in restoring your iPhone with the latest firmware which is firmware 2.2 currently, by holding down Option in case of Mac or Shift in case of Windows, allows you choose the firmware file that you want to downgrade to.)
After restoring you can download the jailbreaking tool and jailbreak firmware 2.2.
Downgrade iPhone 3GS 3.1 to iPhone 3GS 3.0
Firmware 2.2 download links
iPhone 2.2.1 and iPod Touch 2.2.1 Firmware released!
Jailbreak iPod Touch 2.1
” The iphone “iPhone”could not be restored. An Unknown error occured.(1013) “…….
pls anyone! tell me about it that i comment above. pls advise me. i really want to know. help meeeeeeeeee!
please dont worry it has been restored already … This error is quite common.. You can go ahead and perform a jailbreak using quickpwn … Although you cannot unlock it using yellowsn0w because the baseband would have got upgraded and until now DEV team hasn’t come up with a solution to unlock an iphone using yellowsn0w for an iphone with 2.30.0 BASEBAND ….
do you install the itunes 8.0.1 (preferibly) … but before the iphone be in DFU…
(Excuse for my language)
Does this work for the 2g touch?
No
Did the shift and restore and the window comes up and says…… “no item match your search”
Plse help!!
i tried to downgrade always error 1601 or 1604 & my iphone dont start always display the itune with the usb cable image, & my windows cant recognise the iphone on itune 8 but in dfu mode only.
what to do ????
Please reply msn@TonyNassar.com
well, i upgrade my firmware to 2.2.1 from 2.2 then i tried to quickpwn but it freez & the iphone stop responding now when ever i turn my iphone on it give me the itune with usb cable image.
& my windows + itune 8.0 cant reconise the iphone but in retore or dfu mode, any way i tried to install the firmware again but always i got:
error 1601 or 1604 or 2002
& some times the waiting for iphone stay about 3 hours & nothing change.
what should i do please
i tried this way and the fireware downgraded to 2.2 but it only jailbreak my iphone3g but cannot unlock. Does anyone know how to unlock it if i already upgrade the phone to 2.2.1 by itunes. thanks so much!!
You cannot unlock once you upgrade to firmware 2.2.1 because your baseband got upgraded permanently and that can’t be reversed. You’re stuck with a locked iPhone unfortunately.
I managed to get my Iphone 3g back to version 2.2 but i cannot get any signal on the phone. If anyone knows how to get signal plz help, if no il just restore it back to factory settings.
Your Message” The iphone “iPhone”could not be restored. An Unknown error occured.(1013) “…….
pls anyone! tell me about it that i comment above. pls advise me. i really want to know. help meeeeeeeeee!
Hello Tony:
Im from Argentina, the downgrade is imposible, if you keep tring you always get a lot of “errors”. You must put your Iphon in DFU mode, and from itunes restore it to 2.2.1.
Apple do this because de baseband 2.28 is already hacked, but with this new baseband the “ilegal” iphones are useless now.
I hope that this help you, and sory of my poor inglish.
Bye!
how do u put the itouch in dfu mode
can not be restored too, the same error named 1013 appears everytime.
Pls reply lq0501@msn.com when you find great idea!
thx a lot for your works.
exactly the same for me error 1013 every time i try and downgrade, the only thing i can do is restore back to 2.2.1
Hi,
i have the same problem any help is is appreciated
Same error code :1013 here too, pleaseeeeeeeeeee HELP..PLEASE
Hi, I was wondering if this method works if the iphone 3G has the 2.28 baseline
Yes it works.
I Have The Same error of all the other person (1013) what i cando to downgrade it to 2.2
Dont do it in DFU mode if you do it wont work
Just hold “HOME” and “Power” buttons for 15 seconds.
Thats all
Yeah, my iPhone 3G got upgraded to 2.2.1 accidentally.
How long do you guys think it will take for 2.2.1 to be able to be unlocked??
There is no estimate. When Apple releases an update to the baseband (which won’t be anytime soon) the iPhone Dev-Team may be able to find an exploit.
Does It work with 2.30.3 base?
No it doesn’t.
^^^^^^^^^^^^^^
that means if you have ver 2.2.1 (5H11) and modem firmware 2.30.03 the above will not work :(
i have unlocked my iphone 3g but not jailbroken it and i am having some trouble with it is there any way u guys can give step by step instructions and downloads?
You can jailbreak it by downloading QuickPWN 2.2.5 for Windows/Mac from http://www.quickpwn.com/downloads. Download it and the rest is automated and there are many YouTube videos on the web that show how to use it.