What can I do if I installed the developers version of iOS 4.0 on iPhone 3GS by mistake?

Saumil Mehta September 3, 2010

I have installed developers version of iOS 4.0 on my iPhone 3GS, so I am unable to downgrade or upgrade to any version of iOS. Any idea what to do as I am unable to either jailbreak or unlock. Appreciate all the help

  1. Aibek
    September 8, 2010 at 12:12 pm

    Hey Saumil,

    Did you figure it out? Please let us know.


  2. Dinesh Dhakal
    September 4, 2010 at 5:30 pm

    You got no more other options, Just Download another fresh copy of iOS 4.0 and Install into your Iphone using Itunes. You can download it from here http://download.imodzone.net/. Goodluck!

  3. Artur Wrona
    September 3, 2010 at 11:28 pm

    You can downgrade only if you saved your SHSH blob on Cydia.

    Here is link with proper procedure:


    • Saumil
      September 4, 2010 at 5:47 am

      I tried it, it not allowing me to even Jailbreak!!