Upgrade Unlocked Phone to iOS 4.2?

Discussion in 'Jailbreaks and iOS Hacks' started by Epsilon88, Feb 15, 2011.

  1. Epsilon88 macrumors 6502

    Oct 26, 2009
    I took over my sister's iPhone 3G, and it has an older version of iOS. She had gotten it from her boyfriend and then had it "unlocked" or "jailbroken" from a local vendor. If I upgrade the OS to iOS 4.2, will this render my phone incapable in any way? And would it then be necessary to re-jailbreak it?

  2. jmcclain145 macrumors regular


    Jul 27, 2008
    Atlanta, GA

    Thread belongs under the "Hacks" section of iPhone thread, but yes you'll have to re-jailbreak and unlock if you upgrade firmware.

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