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How do I revert my iPhone software back to an older version?

How do I revert my iPhone software back to an older version?

Postby dunlop85 » Sun Aug 14, 2011 4:14 am

I accidentally purchase the newest version when it prompted me to on iTunes, the 4.3.4 version. I need it to go back to what it was before so I can use my unlock program.

Will it work if I back up my files and then restore the iPhone? Will any problems come up?
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dunlop85
 
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How do I revert my iPhone software back to an older version?

Postby buck » Sun Aug 14, 2011 4:18 am

You can't.

The only way I can think of it is if the OLD iPhone firmware is still on your PC check these folders depending what PC you have.

On Windows XP :
Documents and Settings\<User>\Application Data\Apple Computer\iTunes\iPhone Software Updates

On Windows Vista/Windows 7:
Users\<User>\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates

On Mac:
~/Library/iTunes/iPhone Software Updates

If your OLD firmware is there...when you click (restore iPhone on iTunes press Ctrl and then Select the old Firmware)
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