1. stc22's Avatar
    I used Blackra1n to JB my new iPhone 3Gs, it used to be an OTB with preinstalled firmware 3.1. Now I got 3.1.2 after JB with Blackra1n.

    When will unlocking be available for my iPhone?

    Is there a way to downgrade from 3.1.2 to 3.0 in order for me to unlock my phone?

    Any help will be appreciated! Thanks!
    10-11-2009 11:44 PM
  2. big9erfan's Avatar
    You cannot downgrade the firmware of the 3GS at this time ( perhaps ever ), it is also unknown if there will ever be an unlock for 3.1+
    10-12-2009 12:07 AM
  3. tsuehpsyde's Avatar
    1. No one has any idea when this will happen (unlock on 3.1 BB)
    2. There's no way to downgrade the BB. 3.0 doesn't include the BB in the IPSW, so even if you could downgrade to 3.0, it wouldn't downgrade the BB.

    So no, there's no way to unlock currently.
    10-12-2009 12:08 AM
  4. tsuehpsyde's Avatar
    You cannot downgrade the firmware of the 3GS at this time ( perhaps ever ), it is also unknown if there will ever be an unlock for 3.1+
    You can downgrade if your ECID SHSH blobs are on-file with Cydia. But if your phone came OOB with 3.1, then downgrading to 3.0 isn't possible right now. You need the signed files from Apple.
    10-12-2009 12:10 AM
  5. big9erfan's Avatar
    You can downgrade if your ECID SHSH blobs are on-file with Cydia. But if your phone came OOB with 3.1, then downgrading to 3.0 isn't possible right now. You need the signed files from Apple.
    Lets not confuse things. You can if you have the files stored with Cydia, you CAN downgrade firmware, you CANNOT downgrade basebands.
    10-12-2009 12:30 AM
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