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Thread: is it possible to downgrade ios5.1.1 to any ios?

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3G[S] Downgrading

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Jailbreak / Downgrading / Upgrading

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is it same procedures while upgrading? thanks!
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  1. #1
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    Default is it possible to downgrade ios5.1.1 to any ios?
    is it same procedures while upgrading? thanks!

  2. #2
    2k1
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    Shsh blobs is what you will need

  3. #3
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    thanks man!

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    2k1
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    Ya welcome.

  5. #5
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    thanks man! i updated a iphone 3gs to ios 5.1.1 and it has no service..need help.. thanks!

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    2k1
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    What baseband ya on? Had this phone before and worked before?

  7. #7
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    6.15.00 had this phone before..updated it for the first time.. from 4.1..

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    Ya jail broken? Need to git ultrasnow installed

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    You will need to use redsnow to reinstall the iPad baseband again too. If you updated to regular 5.1.1 when you had the iPad baseband installed it puts your baseband in an inconsistent state. So a reflash is needed first.

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    still no service/searching... need help...

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    Superbad Modder-ator Simon's Avatar
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    Did you reflash the iPad baseband?
    Install ultrasnow?
    Also try:
    Try reinstalling ultrasnow.
    Make sure SIM card is active.
    If Tmobile make sure 3G setting is turned off.

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    iPhone? More like MyPhone Jabbacks's Avatar
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    If you're already on ipad Baseband, use redsn0w_win_0.9.14b2 to downgrade. Select ipsw iPhone2,1_4.1_8B117_Restore.ipsw..... After that, use sn0wbreeze-2.9.5 and make a custom firmware using iPhone2,1_5.1.1_9B206_Restore.ipsw. Following on-screen instructions in snowbreeze. When upgrade to 5.1.1 is complete, you should have 5.1.1 on ipad baseband. Now go back and use same redsnow, put phone in DFU mode.... Tick Downgrade iPad Baseband.... When all is said and done, disable 3g & cellular data on phone. Open cydia and install ultrasnow. Wifi is required! Insert sim and give me a call....

    Now was it that hard? Maybe the 3gs guru's in here might be of little more help on this....

    Good Lucks!
    Last edited by Jabbacks; 08-23-2012 at 11:33 PM.

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    Super Penguin Mod i.Annie's Avatar
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    +1. The downgrade of the bb should resolve it. Sometimes some people on the iPad bb still can't get ultrasn0w to work with it.

    Although the above instructions seem a bit complicated...

    If the device is already on 6.15.00 and on 5.1.1, simply run redsn0w, hit jailbreak, set device into DFU, select downgrade from iPad bb only, then you're good to go.

    If you are not at 5.1.1 in a functional state, simply use redsn0w and in extras select create custom ipsw. Do so with a stock 5.1.1 firmware file. Then use iTunes to shift+restore to the no baseband custom 5.1.1 ipsw. Then do the steps above with the baseband downgrade.

  14. The Following User Says Thank You to i.Annie For This Useful Post:

    Jabbacks (08-23-2012)

  15. #14
    iPhone? More like MyPhone Jabbacks's Avatar
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    Quote Originally Posted by i.Annie View Post
    +1. The downgrade of the bb should resolve it. Sometimes some people on the iPad bb still can't get ultrasn0w to work with it.

    Although the above instructions seem a bit complicated...

    If the device is already on 6.15.00 and on 5.1.1, simply run redsn0w, hit jailbreak, set device into DFU, select downgrade from iPad bb only, then you're good to go.

    If you are not at 5.1.1 in a functional state, simply use redsn0w and in extras select create custom ipsw. Do so with a stock 5.1.1 firmware file. Then use iTunes to shift+restore to the no baseband custom 5.1.1 ipsw. Then do the steps above with the baseband downgrade.
    lols.... I knew somebody would say dat.... thanks iAnnie!

    Only if he upgraded to 5.1.1 with custom firmware using snowbreeze. Snow breeze does activate the phone during the process. If upgrade with redsnow and phone requires you to activate with original sim, you might get some kind of problem with your signal. I always downgrade to 4.1 w/ipad baseband and work my way up using the steps I posted above. So far, I haven't had any issues....



    Smiles!
    Last edited by Jabbacks; 08-23-2012 at 11:51 PM.

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    Super Penguin Mod i.Annie's Avatar
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    Lol sorry, there were just some steps in there that were complicated and/or not quite necessary.

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    iPhone? More like MyPhone Jabbacks's Avatar
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    Quote Originally Posted by i.Annie View Post
    Lol sorry, there were just some steps in there that were complicated and/or not quite necessary.
    It's ok... I edited the last post...

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