Jailbreaking an Iphone 4 using iphone3,1_4.3.3_8J2_restore.ipsw update...Help

Discussion in 'Jailbreaks and iOS Hacks' started by Nawizo, Jun 17, 2011.

  1. Nawizo macrumors member

    May 16, 2009
    hai there. recently bought an iphone 4 a week ago but i could not get a software unlock as my baseband is not supported. I have decided to jailbreak it and run iOS 4.3.3 but I nid to know the correct firmware to download. I am currently downloading iphone3,1_4.3.3_8J2_restore.ipsw. Is this the correct download? And should i worry about my baseband (03.10.01) and iOS 4.2.1?
  2. ylerT macrumors regular


    Jun 10, 2011
    Las Vegas
    You're good. Just download 4.3.3 and redsn0w to jailbreak.
  3. TEHi macrumors regular

    Jan 6, 2011
    Wouldn't going 4.3.3 upgrade the baseband to 04.10 as well?
  4. labman macrumors 604


    Jun 9, 2009
    Mich near Detroit
    only baseband that work on I4 is baseband 1.59.00 no other baseband is supported. Also baseband can not be downgraded. your only option as far as unlock goes is the Grevey Sim. as far as jailbreak I would use redsn0w tutorials Click here
  5. Nawizo thread starter macrumors member

    May 16, 2009
    thank alot guys will do my jailbreak tomorrow and let you know how it goes. Oh and thanks for the link to the tutorials. Cant wait
  6. PN2865, Sep 30, 2011
    Last edited: Oct 1, 2011

    PN2865 macrumors newbie

    Sep 30, 2011
    iPod4,1_4.3.3_8J2_Restore.ipsw file is a zip

    I have found many links to
    but they all download zip files that do not contain a ipsw file.
    What am I missing?

    If you DL the file with IE, it changes the extension from ".ipsw" to ".zip". Just change the extension back to ".ipsw".

    Firefox does not rename it.
  7. eastercat macrumors 68040


    Mar 3, 2008
    Use firefox to d/l the file. Otherwise, windows screws with your file.
  8. seanwebb68 macrumors 6502

    Jul 27, 2010
    Just rename the iPod4,1_4.3.3_8J2_Restore.zip to iPod4,1_4.3.3_8J2_Restore.ipsw and it will work

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