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How to:Downgrade iOS 4.0.2 to 4.0.1 for iPhone 4/3GS/3G And iPod Touch 3G
As we all know that Apple has just released the new version of iOS 4.0.2, but for all those who are not satisfied, or want to downgrade to a pervious version of firmware can follow the guide below.
iPhone 3G users can downgrade using the following guide. iPhone 3GS/4 and iPod Touch 3G usersmust have to ECID with SHSH. Saurik saved in the serverand modify the hosts file in order to succeed in the procedure see below:
-The latest version of iTunes.
-The original firmware which you intend to downgrade to it from here.
-iRecovery and libusb for Mac or EasyiRecovery for Windows.
Modifying the hosts file:
-Open Notepad with Adiminstrative privilages, click on Start > All programs > Accessories then right click on Notepad then select open as Administrator.
-Now browse (C:/Windows / System32 / drivers / etc) in the Notpad and open the hosts file then add the following line at the end of the document and save it:
Now you can downgrad iOS 4.0.2 to any older iOS by following this guide.
-Click “Go” -> “Go to Folder” and enter the path / etc /
-Find the file “hosts” and move it to your Desktop.Open the file by right click then open with Text Edit and add this string at the end:
-Save the file to your desktop and then drag it back into / etc / . We will request permission to overwrite and then also the administrator password.
Now you can downgrad iOS 4.0.2 to any older iOS by following this guide
You may also like:
- How to: Downgrade iOS 4.0.2 to 4.0.1 / 4.0 Without SHSH Blobs [EXCLUSIVE].
- How to: Jailbreak and Unlock iPhone 4 on iOS 4.0.1 / 4
- How to: Downgrade iOS 3.2.2 to iOS 3.2.1 on iPad.