How to Downgrade iPhone 4.0 to OS 3.1.3
Soon after iPhone 4.0 firmware was released to developers it also became available for other users via torrents and other file sharing websites, so if you have upgraded to the new iPhone OS 4.0, requires you to register your Unique Device ID ( UDID) which can only be registered by members of Apple Developer Program, however we provided an alternate way yesterday.
Now if you guys aren’t happy with iPhone 4.0 considering its a beta version then you can roll back to iPhone OS 3.1.3, follow this tutorial to downgrade from OS 4.0 on Windows
Pre-Requirements
- Original Firmware OS 3.1.3 for restoring
- iTunes 9.1
- iRecovery 1.3 + LibUSB – download link
Step by Step Downgrading from OS 4.0 to OS 3.1.3
- Download and extract iRecovery to the desktop
- Install Libusb to the desktop filename : libusb-win32-filter-bin-0.1.12.1.exe
- Connect your iPhone via USB and enter in DFU mode by holding down power and home button simultaneously for 10 seconds
- Manually load iPhone OS 3.1.3 firmware file by doing Shift + Restore and selecting the file
- During the recovery iTunes will show error, ignore it
- Close iTunes and run the following commands in console
cd Desktop
iRecovery.exe-s
setenv atuo-boot true
saveenv
fsboot
exit
- Last step : Disconnect from computer and restart your iPhone normally
Congrats you have successfully downgraded from OS 4.0 to OS 3.1.3 enjoy
via ipazio
iPod Touch Search Tags
- how to downgrade itunes 8 posts per day
Recommended Reading
- How to Jailbreak iPod Touch OS 3.0 Firmware with Redsn0wWith Redsn0w 0.7.1 doors to Jailbroken iPod Touch have opened up, you can jailbreak OS 3.0 firmware of iPod Touch 2nd Gen and 1st Gen...
- How to update iPod Touch 1G/2G to OS 3.1.1Apple has released its latest version of iPod Touch firmware which now stands at version 3.1.1, if you have a older version and want to...
- How To Downgrade iPhone/iPod Touch FirmwareEvery now and then Apple launches new firmware for iPhone & iPod Touch, and if a jailbroken iDevice is accidentally upgraded to new firmware then...
- Upgrade to iPod Touch Firmware 2.0 for FreeApple is currently charging $9.25 if you wish to upgrade to the latest firmware 2.0 via iTunes, However if you want to upgrade you iPod...
Did you enjoy this post? Why not leave a comment below and continue the conversation, or subscribe to my feed and get articles like this delivered automatically to your feed reader or enter your email below:
Download iPhone OS 4.0 here – iPhone4Beta.com