An iPhone user having lost his iPhone 3GS has managed to downgrade his newly returned iPhone 3GS from Apple to firmware 4.0.1 from 4.0.2 without having been jailbreaking or using SHSH! These are the simple steps by following which you can downgrade your iPhone
- Download 4.0.1 .iPsw (Download link)
- Now Extract the file with Winrar to a folder on desktop
- open the buildmanifest.plist with the notepad, Search and replace all 8A306 with 8A400
- Now replace 8A306 with 8A400 from restore.plist to.
- Open the original 4.0.2 that’s in C:documents and settingusername*application dataapple computeritunesiphone software updates*.* with winrar/zip
- Now replace all the 4.0.2 files in zip archive that you have open with all the above 4.0.1 files
- Now delete all the dmg files ending with 002, Leaving only 001 files
- Now save it
- Open host file and add the 74.208.10.249 gs.apple.com line
- Now Open itunes after putting your phone in dfu mode and let the itunes to restore.
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{ 4 comments… read them below or add one }
How can I download to OS 3.1.3?
If you have iPhone 2G then you can download it through iTunes, if not then Google it
FAKE!!
If shsh bloobs are not needed there would be no reason to Open host file and add the 74.208.10.249 gs.apple.com line………….this address shows to the saved shsh blobs…..
peter heres a link to download all firmwares
http://www.felixbruns.de/iPod/firmware/