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Thread: Downgrading to 3.0! and Jailbreak

  1. #1
    Smile Downgrading to 3.0! and Jailbreak
    I had a strange idea that maybe I could downgrade to 3.0 after installing 3.1 on my iphone. I did the shift-restore thing and loaded up the 3.0 firmware. It installed and then Itunes said that it could not restore from backup and needed to be setup as a new phone. I did this and then got to my surprise a message saying that a 3.1 update was available. Hell no I thought and realized I was happily back on 3.0 and with a little redsnow magic I am back living the jailbroken life. Maybe I a missed this along the way but I am quite happy. BTW I am on a 2g iphone using windows. Hopefully this helps some other fools who upgraded to 3.1 without reading what I should have...

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    Nikez87 (2009-09-26)

  3. #2
    if you upgraded via itunes there is no way to change your baseband from 3.1 back to 3.0

    at least that is what i thought

  4. #3
    Quote Originally Posted by trbulls View Post
    I had a strange idea that maybe I could downgrade to 3.0 after installing 3.1 on my iphone. I did the shift-restore thing and loaded up the 3.0 firmware. It installed and then Itunes said that it could not restore from backup and needed to be setup as a new phone. I did this and then got to my surprise a message saying that a 3.1 update was available. Hell no I thought and realized I was happily back on 3.0 and with a little redsnow magic I am back living the jailbroken life. Maybe I a missed this along the way but I am quite happy. BTW I am on a 2g iphone using windows. Hopefully this helps some other fools who upgraded to 3.1 without reading what I should have...
    i saw that u could downgrade from 3.1 to 3.0 firmware. Can u say how u did? So that i may also do so???

  5. #4
    Quote Originally Posted by supasekziaznboi View Post
    if you upgraded via itunes there is no way to change your baseband from 3.1 back to 3.0

    at least that is what i thought
    I upgraded through Itunes and it worked for me and I am back on 3.0

  6. #5
    my iPhone is already upgraded from 3.0 to 3.1 but,when i use the firmware of 3.0 instead 3.1 and i restore it asks to upgrade the software and it automatically it downloads the IPSW file for 3.1 and restores.
    Can u say me the procedure how u downgraded ur version???

  7. #6
    Community Manager Bo Troxell's Avatar
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    you can do a shift+restore in iTunes and point it at the 3.0 .ipsw, but as he stated above you may not be able to change the baseband.

  8. #7
    Then there is no way to Jailbreak my iPhone 2G???

  9. #8
    Community Manager Bo Troxell's Avatar
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    yes, it can be done as long as your not on 3.1 firmware.

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    pugssuriya (2009-09-25)

  11. #9
    Ya finally it worked for me.
    When i restored the firmware to 3.0 by choosing the respective IPSW file (iPhone1,1_3.0_7A341_Restore) by holding the SHIFT key+ clicking the RESTORE option in DFU mode.
    After when i tried to Jailbreak it by using redsn0w-win_0.7.2 it worked for me.

  12. #10
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    Thanks to trbuls!

    I was able to downgrade my OS 3.1 and Firmware and unlock my iPhone that I thought would be stuck n 3.1 until the official unlock was announced. I swear this forum is a lifesaver!

  13. #11
    what version of itunes did you complete this downgrading pocess with???

  14. #12
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    I have iTunes 9.

  15. #13
    Quote Originally Posted by Aceklub View Post
    what version of itunes did you complete this downgrading pocess with???
    it doesn't matters about iTunes it matters with your base OS

  16. #14
    I tried this with my iPhone 3G which auto updated itself to 3.1 7C144 and I could not downgrade back to 3.0 at all if anyone has successfully done this using windows with a 3G please hit me up I want my cydia back!!

  17. #15
    My iPhone is a Part of Me mkblade's Avatar
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    Or u could also just install cfw for 3.1 and jb 3.1 like I have on my 2G…though to do that it's important to first dg to 3.0 and then jb then restore iPhone in recovery mode to cfw 3.1 (their is a detailed tutorial on it here so I'm not going to go into details)

  18. #16
    I have tried it my friend but to no avail as yet but thank you for your input

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