Submitted by Thomas Estilow on
Many users have been reporting problems with the iPhone firmware 2.2 upgrade from Apple. It may be that the best way to solve these problems is to take a step back and downgrade to firmware 2.1. Others inadvertently upgraded their phones when syncing to iTunes on their computer and for whatever reason would like to revert.
The process is relatively simple and should bring back the 2.1 version OS to your iPhone. Performing these steps on an iPhone 3G may work, however this article does not cover reversing the 3G baseband update included in firmware 2.2. Remember, taking these steps is at your own risk, and any hacking of the iPhone could render your remaining warranty invalid.
1) Make sure your device is connected to the PC or Mac and choose the iPhone from the menu on the left in iTunes.
2) If the device is not visible in iTunes you must first put the iPhone in DFU mode. Turn the iPhone off. Hold down the sleep and home buttons together for 10 seconds. Release the sleep button but continue to hold the home button until iTunes detects your device.
3) Go to the Summary tab. On a PC hold down the shift key and click the restore button. On a Mac hold down the option key and click the restore button.4) Select the iPhone firmware 2.1 ipsw file.
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5) While restoration is taking place if you receive errors other than 1011, 1013 or 1015 then restart the process with the device in DFU mode.
6) Check the About item in your general settings menu to make sure you have indeed restored firmware 2.1.
Comments
godgift replied on Permalink
I was downgrading to the 2.2 firmware then got the 1013 as you said i might. but then nothing?? then i am forced to restore again through itunes. iphone shows connect to itunes. i am then forced to restore and update back to 2.2.1
You can then follow these steps to downgrade from iPhone firmware 2.2.1 to firmware 2.2:
* Connect your iPhone to your Mac or PC and select your iPhone from the list of devices in iTunes.
* You can follow these steps to put your iPhone in DFU mode (this is required only if iTunes does not recognise your iPhone at all):
o Connect your iPhone to your computer
o Turn iPhone off.
o Hold power and home together for 10 seconds (exactly).
o Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
o 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.)
* You should be able to see all the older iPhone firmware files you had downloaded so far, select iPhone firmware 2.2 file from the download link mentioned earlier (1st Gen iPhone: iPhone1,1_2.2_5G77_Restore.ipsw or iPhone 3G: iPhone1,2_2.2_5G77_Restore.ipsw) to restore your iPhone or browse to the folder where you have downloaded it and select it.
* You might get the any of the following errors: 1011, 1013, 1015, you can ignore them. However, if you get errors such as: 1601, 1602, 1600 or anything else then try putting the iPhone into DFU mode and try again.
* Your iPhone should now be restored to iPhone firmware 2.2. You can check by going to Settings -> General -> About and looking for Version, it should read 2.2 (5G77).
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godgift
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online games replied on Permalink
Hold down Option and press the “Restore” button. If you are using Windows hold down Shift and press the Restore button
CD Rates replied on Permalink
That seems to do the trick, thanks!
Ady replied on Permalink
i was downloading the iphone 2G 2.2 firmware. when I connect to itunes and click restore pressing the SHIFT button seems like itunes cannot detect the firmware. the firmware that i download is in zip file. what should i do after download the zip file?
Anonymous replied on Permalink
I tried it, and does not work
Anonymous replied on Permalink
If you are using Windows hold down Shift and press the Restore button.You can read more on Free poker money no deposit (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.
steph_8sf replied on Permalink
this is bullshit!!
it doesnt work and ive tried it 3 times.... it says my simcard is not compatible :S
Anonymous replied on Permalink
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 online games
Anonymous replied on Permalink
make sure you backup your iphone manually first, you will not be given the option to backup. If you have not backed up your phone recently you lose everything from your last backup point.
Anonymous replied on Permalink
It is always good to prepare yourself for back up. - Andrew Stolper