downgrade iphone 3gs 6.1.3 to 5.1.1

 

How To Downgrade From iOS 6.1.3 To 5.1.1 or lower on iPhone 4 / 3GS /iPod Touch 4g

 How To Downgrade From iOS 6.1.3 To 6.1.2 or Lower iPhone 4 ,3GS , iPod Touch 4g

To download tinyumbrella click the link below
http://thefirmwareumbrella.blogspot.com

To download RedSn0w click the links below:
( MAC )
https://sites.google.com/a/iphone-dev...

(WINDOWS)
https://sites.google.com/a/iphone-dev...

To download your IPSW iOS Software click the link below
http://www.felixbruns.de/iPod/firmware/

THINKS