iPhone upgrade to ios 5.1

Discussion in 'Jailbreaks and iOS Hacks' started by elisa2012, Dec 11, 2012.

  1. elisa2012 macrumors newbie

    Dec 11, 2012

    I have iPhone 3GS, currently iOS 4.3.3 (jail broken). I am trying to upgrade firmware to iOS 5.1.

    I am trying to do so with redsnow. While querying cydia, it looks there SHSH blob for 5.1, 5.0.1.

    When I tried to restore iOS 5.1 using iTunes (plug phone go iTunes and in device, press option + restore). It says "the device isn't eligible for requested build". Looking google, every one suggested to remove DNS (/etc/hosts) entry for gs.apple.com. I don't vave that. But still fails.

    Any suggestion. Thanks in advance
  2. TriJetHero macrumors 601


    Oct 13, 2010
    to restore to 5.1 or 5.01 you need to do it by either stitching the available SHSH manually to the IPSW or use redsn0w to do it for you.

    for 5.1 there is no untethered JB, use 5.01

    Download 5.01 IPSW
    download redsn0w

    go to Extras/even more/restore

    select donwloaded IPSW
    select remote blobs and follow instructions

    if you need to preserve BB to unlock redsn0w will ask if you want to preserve the BB.

    afterwards use redsn0w to jailbreak

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