iPhone 3Gs 4.0 downgraded to 3.1.3 Successfully Jailbreak & Unlocked

This thread is for those who where having problem with their iphone 3gs updated to iOS 4.0 heres a better solution

even you were in iOs 4.0 you could still downgrade it to FW 3.1.3 after you've manage to downgrade it you can now unlock it


usings this tools

• iTunes 9.2
• Firmare 3.1.3
• ireb v3.1
• SpiritJB
• Unlock Ultrasn0w Guide

Follow Step By Step in Pics

you will now encounter error in itunes just ignore it & close itune then open ireb
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now jailbreak it using spirit

Then Unlock With Ultrasn0w

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ou are now running in version 3.1.3 w/ Modem firmware 5.13
I repeat this is only for those who have updated their iphone 3gs to iOS 4.0

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