How do Can I downgrade to 3.1.3 on my 3GS from 4.0 if I upgrade?

Discussion in 'Jailbreaks and iOS Hacks' started by ahfu25, Jun 16, 2010.

  1. ahfu25 macrumors 6502a

    Dec 28, 2009
    I have 3.1.3/5.12 and I wanted to try 4.0. If i wanted to downgrade to 3.1.3 how would go by doing so? my SHSH's are on file with saurik. Im using a windows laptop. I am currently jailbroken with spirit. I dont care much to jailbrake 4.0 as I am getting the iPhone 4 soon.
  2. Martinsalas310 macrumors regular

    May 13, 2010
    Nampa, idaho
    trick ur itunes into thinking its reading apples servers into actually checking sauriks's and then just enter ur phone into recovery mode then alt+click restore then choose 3.1.3 then when u get error message use a program called recboot to kick ur phone off recovery and there u go let me know if u have more questions as i just firured this out like 3 days ago and just did it and it worked perfect!:apple:

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