Results 1 to 9 of 9

Your favorite Apple, iPhone, iPad, iOS, Jailbreak, and Cydia site.


Thread: iphone 3G 4.1 to 4.0.1 downgrade?

  1. #1
    Default iphone 3G 4.1 to 4.0.1 downgrade?
    Hey,
    I recently upgraded from 3.1.2 to 4.1. I now wish to downgrade to 4.0.1. i have searched on Google for a while now and everything I try fails. I am on mac OS X. i didn't save my SHSH blobs on Cydia because i used Rock. i keep getting the error (1015). i've tried using RecBoot, Quikpwn and pressing option + click and selecting 4.0.1 and it still does not work for me. Can anyone suggest some alternative ways to downgrade?
    Thanks.

  2. #2
    iPhoneaholic dotFIVE's Avatar
    Join Date
    Sep 2010
    Location
    California
    Posts
    494
    Thanks
    9
    Thanked 82 Times in 79 Posts

    Download TinyUmbrella and use that to check what SHSHs you have saved. Save them to your computer. If you have 4.0.1 blobs saved, then you'll be able to downgrade. Click on "Start TSS Server" and then alt + click on restore and select the 4.0.1 firmware. Afterward, use the "Kick device out of recovery" button in TU to finish.

    Without 4.0.1 blobs though, unfortunately you won't be able to downgrade.

  3. The Following User Says Thank You to dotFIVE For This Useful Post:

    boond (2010-11-12)

  4. #3
    So it's not possible? Could I downgrade back to 3.1.2?

  5. #4
    Retired Moderator iYeow's Avatar
    Join Date
    Feb 2008
    Location
    Vancouver, Canada
    Posts
    13,996
    Thanks
    76
    Thanked 2,764 Times in 2,652 Posts

    To downgrade to 3.1.2 , put your iphone into DFU mode
    Do the Shift + Restore to 3.1.2
    Error 1015 pops up
    Exit recovery from the feature of Tiny Umbrella.
    Jailbreak with Redsn0w 0.9.4

    Don't bother downgrading to 4.0.1, it is as slow as a snail.
    Last edited by iYeow; 2010-11-07 at 03:34 AM. Reason: Automerged Doublepost

  6. The Following User Says Thank You to iYeow For This Useful Post:

    boond (2010-11-12)

  7. #5
    OK, thanks I'll give it a try.

  8. #6
    Retired Moderator iYeow's Avatar
    Join Date
    Feb 2008
    Location
    Vancouver, Canada
    Posts
    13,996
    Thanks
    76
    Thanked 2,764 Times in 2,652 Posts

    I have one suggestion, why don't you restore to 3.1.3. Everything on the instruction will be the same, when running redsn0w to jailbreak , point to 3.1.2 ispw.
    For 3g, 3.1.3 is the best for speed and performance.

  9. The Following User Says Thank You to iYeow For This Useful Post:

    boond (2010-11-12)

  10. #7
    Ok, thanks, i was just thinking of using Blackra1n. although. is it possible to then upgrade from 3.1.3 to 4.0?

  11. #8
    I have succeed in downgrading my iPhone from 4.1 to 4.0.1. I used a normal downgrade technique and used tiny Umbrella to kick from recovery.
    Thanks for the help.

  12. #9
    Retired Moderator iYeow's Avatar
    Join Date
    Feb 2008
    Location
    Vancouver, Canada
    Posts
    13,996
    Thanks
    76
    Thanked 2,764 Times in 2,652 Posts

    Quote Originally Posted by boond View Post
    I have succeed in downgrading my iPhone from 4.1 to 4.0.1. I used a normal downgrade technique and used tiny Umbrella to kick from recovery.
    Thanks for the help.
    Why did you downgrade to 4.0.1, it is full of bugs , slow and lag.
    For 3g, you either want 3.1.3 or 4.1 fw, both are jailbreakable.

Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •