How to downgrade your iPhone from iOS 4 back to 3.1.3 ( Video )

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comexxx

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Everyone is excited about the new iOS 4 update for the iPhone and iPod Touch, right? Well, if you have installed it and decided you liked the 3G version better, check out this clip. In this tutorial, learn how to get back to your familiar 3.1.3 version of iPhone firmware and back into your comfort zone.




Few days back Apple released iOS4 which is compatible with the iPhone 3G, iPhone 3G and iPod Touch iPod Touch 2G and 3G. Most users updated their iPhone to OS intentionally or accidentally and now finding way to downgrade back to previous iPhone firmware. If for any reason, you upgraded it to iOS 4.0 and would go back to 3.1.3, follow the steps listed below.
To downgrade the firmware on the iPod Touch and iPhone 3G, you need the ECID SHSH certificate for firmware 3.1.3, and we are sure that you had saved it before the official release of firmware 4.0.
Steps to Downgrade iOS 4.0 to 3.1.3 OS Firmware

Step 1: First we make a manual change to the hosts file according to the Windows operating system. Navigate to the path
 
Mate for what you need to downgrade or backing back to 3.1.3 , if you have a full sulution on iOS4.0?

Looking on the future!

?

BR
 
i have my iphone 3gs ECID at my desktop where should i place it to perform the downgrade?

i tried downgrading & my IMEI AND ECCID becomes UNKNOWN.
 
Go to Downgrade from iOS4 to 3.1.* (requires SHSH blobs) - iPod touch, iPhone, and iPad forum - Multi-Touch Fans
follow the instructions and it will work.
 
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