How to Downgrade iOS 5.0.1 to 4.3.3, 4.3.5 On iPhone 4, 3GS, iPad 2/1, iPod touch
Downgrading is an option you proceed with when you want to get your system back to its older version – and this is quite common in iPhones. Here’s a short and quick tutorial on how to downgrade iOS 5.0.1 to 4.3.3, 4.3.5 on iPhone 4, 3GS, iPad 2/1 and iPod Touch.
As the date of this post, Apple lets you downgrade only when there’s a previous SHSH blob (for iOS 4.x) backed-up by you. You can see how to create such SHSH blobs from your iDevice here.
So the first things you’ll need in order to downgrade iOS 5.0.1 to 4.3.3 or 4.3.5 are the IPSW files (firmware files) for the particular version of iOS you want to downgrade to. You can get those from the links below:
- So the first step in performing the downgrade is the get your device in the DFU mode. In order to do this, proceed with the following steps:
- Connect your iDevice to your system via USB
- Now, press the Power button for about a second or two.
- Without releasing the Power button, press the Home button too.
- Hold for about 15 seconds.
- Now release the Power button alone – do not release the Home button.
- Hold for about 10 seconds or so.
- Your iDevice screen will go black completely – that means it has entered the DFU mode.
- Now, go to this folder in Windows: C:/Windows/System32/drivers/etc
- On a Mac, that would merely be /etc
- You’ll find a file called “hosts” in the folder. Make a backup copy of it somewhere.
- Now, add the following lines to the end of the “hosts” file ( the original file, not the backup)
- 126.96.36.199 gs.apple.com
- Save the file.
- Now, we are going to restore your iDevice to the IPSW firmware file we downloaded before step one.
- Open iTunes on your system and select your device from the sidebar. There’s a Restore option, right? Don’t click that! Press the left Shift and while keeping it pressed, click on Restore. It will ask for a file to be located.
- Choose the correct IPSW file for your device and for the iOS version you want to downgrade to.
- In all probability, you may receive some error like Error 10xx where xx is any number like 16. Do not worry about it. Use a tool like Fix Recovery or TinyUmbrella to breeze through the error.
- If all went fine, your iDevice would easily be downgraded to the version of the iOS you chose to.
This is how to downgrade iOS 5.0.1 to 4.3.3 on iPhone 4. You can also use the same steps to know how to downgrade iOS 5.0.1 to 4.3.5 on iPad 2/1 too – reports say it’s working perfectly fine as long as you have backed-up SHSH blobs from your device previously for the versions of iOS like 4.x.