Accidentally upgraded to firmware v2.2.1?
Want to Jailbreak or Unlock your iPhone v2.2.1?
Much to your delight its possible to Downgrade to V2.2 … !!
Apple disables several hacks and jailbreaks with firmware upgrades. With iPhone OS 2.2.1 the ones who rely on jailbreak or unlocking to use their iPhones fully are in a spot. But with this hack, you can downgrade the iPhone firmware and get back to v 2.2 for jailbreaking your iPhone.
read on
Going back to firmware v2.2 is very simple. All you need is iTunes on your system and the v2.2 firmware files. (Download the v2.2 firmware file for iPhone 1st gen here / for iPhone 3G here).
- 1. Put your iPhone in DFU mode
- 2. iTunes will show your iPhone with a Restore option
- 3. Press Shift+Restore and select the v2.2 firmware file that you have downloaded
- 4. If you get an error message, try again
Now follow the steps to Unlock / Jailbreak firmware version 2.2 and cheers!