Today, MuscleNerd unveiled the video of an iOS 4.2 untethered jailbreak that is currently in the works. This is wonderful news for everyone who wisely held off on upgrading their iPhones to 4.2.1.

If you noticed lately how Cydia mysteriously saves off your 4.2b3 SHSH files, well this exploit utilizes those. Patience is indeed a virtue! Check inside for full video displaying the untethered jailbreak running on an iPod Touch 4g.

Of course an untethered jailbreak is superior to a tethered jailbreak because it allows you to freely restart your iPhone with out having to repeat the jailbreak process with each reboot.

Have you held off until an untethered jailbreak was released, or have you already taken the plunge?

  • miguel

    nope.we still waiting for that.i m from romania.we hope Unteathered JB for ios 4.2.1 ,coming soon.
    when!!!!!!??????????,just deav-team know.

  • Andrew

    I updated my iPhone 4 to version 4.2 I need help finding and doing a untethered jailbreak I really miss having it jailbroking please help me !!
    Sincerely ,

    • Sean

      Andrew, download RedSn0w b4, also download your firmware(both can be found by google search.Then simply open RedSn0w, browse your ipsw(firmware that you downloaded 4.2) then just follow all instuctions that RedSn0w prompts you! Be patient, it may take several attempts!!

      running 32gb JB IPhone 4 Firmware 4.2.1
      best JB app—MyWi– has speed sufficient enough for me to play xbox live

    • Sean

      Still no untethered JB Andrew. Only tethered

  • pogs

    i just had my iphone 4 jailbroke.cydia was not working. safari doesnt work as well. anybody can help? tnx

  • Alex

    Where can I find a jailbreak for 4.2.1 that can be done using windows?