How to Downgrade Iphone from 4.0 to 3.1.3

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Uploaded on January 13, 2011 by PrattFrancisco55

Download Link File: http://spreadquick.com/Latricia157/Iphone
Downgrade from 4.0.

There may be other, simpler ways to do so, but after hours of testing this has worked for me twice.

-YOU WILL NEED SHSH FILES ON SAURIK'S SERVER FOR 3.1.3 AND 3.1.2.
-YOU WILL NEED TO EDIT YOUR HOSTS FILE TO BYPASS APPLE'S SIGNATURE.

Instructions:

To do this, you'll need the following:
blackra1n
3.1.2 FW for 3GS (this isn't tested on any other device)
3.1.3 FW for 3GS
Pwnage Tool 3.1.5

Tags:
*, Ziphone, Unlock, IPhone, Jailbreak, Activation, 1.1.2, 1.1.3, 3g, 3gs, Firmware, Jail, Comedy, How To
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