Upgrading iOS 4.2.1 to 5.0.1 with only 4.2.1 SHSH Blobs on iPhone 4

Discussion in 'iPhone' started by JetsetJoey, Apr 12, 2012.

  1. JetsetJoey macrumors newbie

    Apr 12, 2012
    Hello everyone~

    Is it possible to stitch a custom ipsw by using an older saved SHSH Blob (ie., 4.2.1) and combining it with a newer ipsw (i.e., 5.0.1) using RedSn0w & TinyUmbrella? I'm reading very different claims on various sites, so if anyone actually has hands on experience, that'd be fantabulous!!!

    Thanks~ Joey
  2. eastercat macrumors 68040


    Mar 3, 2008
    You need the blob and the apticket for 5.0.1.

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