Upgrade from iPhone 3GS from 4.0 to 4.2.1 but preserve 05.13.04 Baseband

Discussion in 'Jailbreaks and iOS Hacks' started by swizard, May 31, 2011.

  1. swizard macrumors newbie

    Joined:
    Apr 30, 2011
    #1
    Hey guy,

    I have had an iPhone 3GS for quite some time and I have been avoiding upgrading from 3.1.3 to iOS 4. However I finally gave it and upgraded this morning. I upgraded to 4.0 (05.13.04 bb) just to be safe because I need to keep my phone unlockable. I downloaded Tinyumbrella started the TSS server and then went into iTunes and Shift+Restore'd the official 4.0 firmware. However I did run into a problem when I upgraded from 3.1.3 to 4.0 and I got to "connect to iTunes" screen. I had an old AT&T SIM card in, but it kept failing to active the iPhone. Luckily, I used limera1n and it by passed the activation screen, but it's still a problem that concerns me and may be problematic when I upgrade to 4.2.1.

    I want to upgrade it to 4.2.1 but make sure I preserve the 05.13.04 Baseband. Is this possible and if so, can someone please give me detailed step-by-step instructions on how to do so?

    I have all my SHSH Blobs from 4.0 onwards.

    Thank you in advance! :)

    -Swizard
     
  2. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
    Dude, tinyumbrella only preserves the baseband on iphone 4's.
    NOT iphone 3GS.
    Read up and find out everything before you completelly mess up and lose your unlockable baseband.
    You said you only went to 4.0 so you didnt blow it completelly.
    Use pwnage tool to build a custom 4.3.3 ipsw to preserver you unlockable baseband and hactivate your iphone without an official sim.
    If you do have an official sim use that to activate instead so you dont lose your push or youtube feature etc...
    Follow this:
    http://www.iclarified.com/entry/index.php?enid=14573
     
  3. swizard thread starter macrumors newbie

    Joined:
    Apr 30, 2011
    #3
    Thank you for the prompt reply! I didn't realize that tinyumbrella didn't work for preserving the 3GS.

    I have a Windows so is this the correct link to use? http://www.iclarified.com/entry/index.php?enid=14563
     
  4. swizard thread starter macrumors newbie

    Joined:
    Apr 30, 2011
    #4
    Also, since I have a 3GS do you think I should stay at 4.2.1 or go to 4.3.3, like you mentioned in your response?
     
  5. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #5
    Pwnage tool is only available for Macs.
    For windows you will have to use snowbreeze.
    http://ihowto.com/186/jailbreak-iph...3-jailbreak-iphone-4-3gs-and-unlock-tutorial/
    Make sure you go thru the Baseband Preservation Mode to maintain your unlock.

    I would go to 4.3.3, no point on staying on 4.2.1
    The 3GS handles it fine.
     
  6. swizard thread starter macrumors newbie

    Joined:
    Apr 30, 2011
    #6
    Awesome! Thank you so much for the replies! I am downloading the 4.3.3 firmware right now and am going to attempt this based on the sn0wbreeze instructions.

    I'll cross my fingers and hop on one foot and make sure this works and I don't lose my old baseband.

    I'll post again as soon as I'm finished.
     
  7. swizard thread starter macrumors newbie

    Joined:
    Apr 30, 2011
    #7
    I just finished installing the 4.3.3 firmware with hacktivation + Push Doctor Fix. And it works like a charm. Thank you again so much! =)
     
  8. swizard thread starter macrumors newbie

    Joined:
    Apr 30, 2011
    #8

    So as I mentioned, I used the Hackvation + Push Doctor Fix.

    However I just found this link ( http://www.iclarified.com/entry/index.php?enid=13089 ) on how to use real Subscriber Artificial Module (SAM) in order to "hacktivate" your phone. Do you think it would be wiser for me to uninstall Push Doctor Fix and use this real SAM authentication?
     
  9. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #9
    Yes, that is a better option if you want to give it a shot.
    Or you could always purchase an inactive AT&T sim on eBay for around $2 and use that to activate it officially each time.
     
  10. Rizvi1 macrumors 6502a

    Joined:
    Mar 29, 2006
    Location:
    Laurel, MD (Baltimore, MD / Washington, DC area)
    #10
    I want to take my iPhone 3gs from 4.0 to the latest OS I can and restore it in the process so it's like a new phone w/out any junk (or as close to a new phone feeling as can be achieved). It's Jailbroken/unlocked to be used with T-mobile. The baseband is 05.13.04 and from what I understand, I need to keep it at this.

    I've downloaded PwnageTool to my Mac and have my iPhone connected to it.

    Where should I download the firmware I want to update to? Should I get 4.3.3 too or is there a newer one right now? Again, need to be able to Jailbreak/unlock to use this phone with t-mobile.

    Once I get the FW, I should then proceed with the tutorial here correct:
    iPhone | How to Jailbreak Your iPhone 3GS Using PwnageTool (Mac) [4.3.3]
    Thanks for clarifying this. A friend of mine was telling me that in order to run iOS4.2+ I would have to update to iPad baseband (6.15.x) for a reliable unlock. He said if I didn't wna tto do that, I should stay up to ios 4.1. That's what he encountered when he wanted to unlock to 4.2.1 - he had to update the iPad baseband. He said 4.2.1 was my best bet.

    This part is something I'm not familiar with at all. I do have an AT&T SIM at home which came with the iPhone 3gs I bought used. I think I had to leave the SIM in when I went to jailbreakme.com and then installed ultrasn0w. And then I was able to put the t-mobile sim in and haven't had to pull it out since.
     
  11. Rizvi1 macrumors 6502a

    Joined:
    Mar 29, 2006
    Location:
    Laurel, MD (Baltimore, MD / Washington, DC area)
    #11
    I wanted to ask one more time about this. I use the iPhone 3gs with t-mobile but it was originally locked to AT&T. I do have the AT&T SIM. I just used TinyUmbrella/PwnageTool/iTunes to take the firmware version of my phone from 4.0 to 4.3.3 (the latest version I can use I believe for the unlock) and kept the baseband at 05.13.04. During the entire process I had the inactive AT&T Sim in - does that mean that I did an official activation and will get the benefits such as push notifications, better battery life? Or do I need to follow that iclarified tutorial: iPhone | How to Hactivation Your iPhone Using Subscriber Artificial Module (SAM)
     

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