Help with downgrading 4.3.4 to 4.3.3 weird baseband problem

Discussion in 'iPhone Tips, Help and Troubleshooting' started by marco208, Jul 23, 2011.

  1. marco208 macrumors newbie

    Jul 23, 2011

    I got an iphone 4 with 4.3.4.. i downgraded to 4.3.3 now i have no service...

    its not the one-signalbar-issue so its not fixable using ultra snow

    Things to include:
    *restore to 4.3.4 is possible through official way
    *downgrade to 4.3.3 is possible trough TinyUmbrella/Cydia
    -*Downgrade is only possible with baseband preservation
    -*with baseband included it will give 1013 at the end (recovery fix will not work)
    *on boot the iphone has 1 signal bar after a few seconds "no service" appears
    *4.3.4 works fine except for tethered-boot

    Anyone knows a solution?

  2. awadeee macrumors 68020


    Jan 21, 2011
    Viper City
    I wouldn't try downgrading without SHSH saved. When you got your iPhone 4, was it already on 4.3.4? Or were you on 4.3.3 jailbroken?

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