Downgrading 4.2.1 to 4.1 on iPhone 4

Discussion in 'Jailbreaks and iOS Hacks' started by lakergoon24, Jan 24, 2011.

  1. lakergoon24 macrumors member

    Joined:
    Jun 27, 2010
    #1
    I upgraded my iPhone 4 to 4.2.1 recently and i miss my jailbreak. Can someone tell me the easiest way to downgrade back to 4.1 so i can jailbreak again.
     
  2. wfriction macrumors newbie

    Joined:
    Jan 24, 2011
    #2
    If you like, you can stay on 4.2.1 and do a tethered Jailbreak using Redsn0w. Just go to the iphone dev team blog.
     
  3. lakergoon24 thread starter macrumors member

    Joined:
    Jun 27, 2010
    #3
    So with tethered everytime i download a app on cydia i just have to have my phone plugged into the computer??
     
  4. numanuma89 macrumors newbie

    Joined:
    Jan 23, 2011
    #4
    You only need to have your iphone plugged into your computer when your iphone needs to reboot. So, if the app you install with cydia requires a reboot, you will have to connect the phone to a computer to turn on the phone again. Not all apps on cydia requires a reboot.
     
  5. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #5
    Did you have 4.1 shsh blobs saved on cydia?
    You can downgrade only by having those.
     
  6. Grayburn macrumors 68000

    Grayburn

    Joined:
    Jul 12, 2010
    Location:
    London, England
    #6
  7. hackthatphone macrumors 68000

    hackthatphone

    Joined:
    Jul 28, 2010
    #7
    Wow that guide has some issues.

    Step 2 can be eliminated completely.

    Step 3 is nice to know but can be eliminated as they demonstrate later by using tinyumbrella it will edit the hosts file for you anyway.
     
  8. Grayburn macrumors 68000

    Grayburn

    Joined:
    Jul 12, 2010
    Location:
    London, England
    #8
    Maybe to you but i've never downgraded before and this guide was perfect.I did everything it says and it worked.

    Thats all that matters to me.
     
  9. LongbowFoSho macrumors member

    Joined:
    Nov 26, 2010
    #9
    I don't understand why the guides say you have to be in DFU mode when TU won't even recognize a device that's in DFU mode. I always just use TU to put the phone into recovery, turn on the TSS server, fire up iTunes, Shift-Restore and voila....downgraded.
     
  10. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #10
    I hear you.
    Alot easier.
     

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