How To Downgrade iOS 5.0.1 Beta 1 To Lower Versions

Hmm, I have many references today about the new iOS 5.0.1 Beta 1 version release. I am sure that many of you have updated your iPhone to this latest iOS firmware. Now, I've got the tutorial about how to downgrade your iOS 5.0.1 Beta 1 to the lower versions of iOS firmware. The lower versions I mean are iOS 5.0 Final version and iOS 4.x.x.

Downgrading iOS 5.0.1 beta 1 is useful because you might encounter with any errors. Moreover, some of iOS apps won't work on your iPhone because they are not supporting this latest iOS firmware. Here the simple tutorial for you to downgrade your iOS 5.0l.1 Beta 1 to the lower versions. Please note that you have to save Apple’s signed version of iOS firmware. If the lower iOS version you have (iOS 4.x.x) is not signed on Apple anymore, you should have its backed up SHSH Blobs using TinyUmbrella.

Downgrade iOS 5.0.1 Beta 1 To Lower Versions [Step-By-Step Guide]

Step 1. Download the .ipsw file of the iOS firmware in lower version you want (Here you can downgrade to iOS 5.0 Final version or iOS 4.x.x).

Step 2. Put your iPhone into DFU Mode (If you are familiar with jailbreaking process then do it as usual).

Step 3. Edit the "Hosts" file on your Windows. Go to Windows -> System 32 -> drivers -> etc folder.

Step 4. Use Notepad to open and edit "Hosts" file. Add the line below on the "Hosts" file ->> Save and close it :

74.208.105.171 gs.apple.com

Step 5. Launch iTunes -> Choose your device name by clicking your device name in the left side bar.

Step 6. Hold down the "Shift key" on Windows (Alt key on Mac OS X) + Click the "Restore" button on iTunes.

Step 7. Locate the iOS 5 Final version .ipsw file or iOS 4.x.x you have -> Use TinyUmbrella by clicking "Exit Recovery" button).

Now, the downgrade process is done. Now you should running on the lower version of iOS firmware as you want. The most important thing you have to do is do not forget to remove the line in step 4 from the "hosts" file.