Can I upgrade to 5.1?

Discussion in 'Jailbreaks and iOS Hacks' started by Dalexc, May 26, 2012.

  1. Dalexc, May 26, 2012
    Last edited: May 26, 2012

    Dalexc macrumors newbie

    Joined:
    Feb 12, 2011
    #1
    I know you guys are sick of these questions but I searched and just want to double check:

    I have:

    iphone 4 GSM
    baseband 4.10.01
    Currently running 4.3.3

    I've preserved the baseband and looking to upgrade to 5.1. The only issue I have is that I have not saved my shsh blobs from what I understand I can no longer do it.

    Can I upgrade to 5.1 without saving SHSH blobs? Thank you.

    EDIT - Also I am not looking to jailbreak.
     
  2. PsstGreek macrumors 68040

    PsstGreek

    Joined:
    Oct 21, 2010
    Location:
    Tampa Bay
    #2
    Without those blobs saved upgraded to a firmware apple isn't signing anymore is impossible.
     
  3. Dalexc thread starter macrumors newbie

    Joined:
    Feb 12, 2011
    #3
    What! So you're saying that upgrading my phone is no longer possible? I thought someone could upgrade their phone preserving baseband without saving shsh blobs. Of course running the risk of if they ever wanted to downgrade they couldn't.

    Are you saying that it is impossible for me to upgrade to 5.1 altogether?
     
  4. labman macrumors 604

    labman

    Joined:
    Jun 9, 2009
    Location:
    Mich near Detroit
    #4
    Also you can't unlock unless you jailbreak. Unless your carrier will unlock it for you which AT&T for example is now doing.
     
  5. PsstGreek macrumors 68040

    PsstGreek

    Joined:
    Oct 21, 2010
    Location:
    Tampa Bay
    #5
    You can upgrade yes, without shsh saved, but that is if Apple is still signing that current firmware.

    You're only options are to stay on whatever firmware you're on now, or upgrade to 5.1.1
     
  6. Dalexc thread starter macrumors newbie

    Joined:
    Feb 12, 2011
    #6
    Okay, I think you guys just saved me from making a HUGE mistake. I didn't want to go into the details, but here is what I've done so far:

    I've preserved my baseband using snowbreeze and was following the directions here:

    http://www.ihelplounge.com/ihelplou...4-to-ios-5-while-preserving-the-baseband.html

    Once I got to the restoring iTunes part, I realized that I do not have the SHSH blobs saved and that it is impossible. From what I understand, SHSH blobs are only necessary if someone wants to downgrade their firmware to a previous one that they have. I have no intentions of downgrading, unless of course something happens that requires me to do so.

    So if I were to go and upgrade to the latest firmware with using the method above in preserving my baseband, will it be ineffective and I can no longer use my unlock? The way I have my phone unlocked now by the way is through using a gevey sim tray.

    EDIT - Or are you saying once I Shift+restore on iTunes it would have simply not worked?
     

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