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.