Step-by-Step Guide to Downgrade from iPhone Firmware 2.2.1 to Firmware 2.2

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• Jordan Posts: 163

  June 2009 via Wordpress

  hey i have the 3g. i downgraded to 2.2 and used quickpwn, but i still cant call or text, im not on rogers, but fido. can n e one help?
  

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• John Posts: 790

  June 2009 via Wordpress

  does any one know if this helps with the wifi problem, because after upgrading many people like myself has suffered from the wifi not recognizing any network

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• gdrz Posts: 1

  July 2009 via Wordpress

  Hi
  I have a problem I DOWNGRADED IPHONE 3G fIRMWARE from 2.2.1 to 2.2: but It have error massage 20 occure
  anything would help

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• iPhoneHacks Posts: 2,315

  July 2009 via Wordpress

  Any reason for downgrading? As the latest version is iPhone OS 3.0.
  
  
  

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• Jonathan Mayer Posts: 4

  December 2009 via Wordpress

  get back to the old version - new is not always better.

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• Jonna Posts: 1

  December 2009 via Wordpress

  hello everyone,

  My iPhone is locked how do i know with which firmware i have to restore it. My itunes are not recognising my iphone. i have used iPhone1,2_2.2_5G77_Restore.ipsw to restore my iphone. im getting error(20). Any help will be appriciated.

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• Nick Thompson Posts: 1

  July 2011 via Wordpress

  @maurey23, you need to change the .zip into a .ipsw, download more iphone firmware from herehttp://www.kittyra1n.com/iphone-firmware.html

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