How to: Jailbreak iOS 4.3.3 (Untethered) using redsn0w

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Photo credit: Marco Wessel (Flickr)

Apple released their latest iOS firmware yesterday which fixed the “location bug” whereby iDevices were tracking and storing user location data. Thankfully the firmware is still vulnerable to i0n1c’s exploit, so jailbreaking the devices in an untethered manner is still possible.

The method we’re about to explain uses redsn0w and works on both the PC and Mac platforms.

BEFORE YOU START: If you require on a carrier unlock then DO NOT proceed since this will permanently update your device’s baseband.

  1. Download iOS 4.3.3 for iPhone, iPad or iPod touch (iPad 2 is not currently supported). [Direct links at bottom of this post]
  2. Download redsn0w for your PC / Mac [Direct links at bottom of this post]
  3. Carry out a full backup /sync of your iDevice using iTunes.
  4. Update your device using the IPSW firmware file you’ve just downloaded using iTunes 10.2.2
  5. Open redsn0w and browse to the firmware file you downloaded
  6. Select “Install Cydia” and click the “next” button.
  7. Connect your device to your computer then turn it off before clicking “next” again
  8. Follow the on screen instructions to put your device into DFU mode. (In summary, this requires you to hold the “Power” button, then whilst still holding the “Power” button hold the “Home” button before finally releasing the “Power” button whilst still pressing the “Home” button. This sounds more complicated than it is, which is why you are guided through it on-screen).
  9. Redsn0w will now do everything it needs to automatically. Once the device reboots, you’ll find it’s jailbroken untethered. Unplug and enjoy!

If you aren’t sure what tethered and untethered jailbreaks are, then we’ve a simple explanation here.

Direct Download Links for redsn0w 0.9.6rc16

Direct Download Links for iOS 4.3.3 / 4.2.8 (These are straight from Apple)

Update: Links updated and version RC16 of redsn0w added since fixes some vibration issues and battery drain.

  • rc15 is out now.. i just heard this..

  • Rob

    This article is RC15… =)

  • Rob

    Now updated to include RC16

  • Monty_1689

    But Sir 
    as i was mentioning that i have almost done all the steps but now as i connect to the Itunes it states that your carrier is not supported. please insert the sim which you got when you purchased your iphone…
    and when i unplug my phone it shows only emergency calls…  Is there any software to fix this???

  • Rob

    No. It sounds like you have a sim locked handset. You will need to get an original sim to activate it or alternatively if you have a Mac get pwnage tool and you can the hacktivate your device.

  • Monty_1689

    i want to ask that if it is sim locked then we are able to opne the phone atleast or not??
    my phone is not showing that home page not showing even any single application….
    when i slide to opne the phone it shifts into emergency calls….
    so i want to ask that if i go to my service provider he can fix it or not??? 

  • Rob

    Service provider won’t be able to do a thing. Only the original network provider can. You either get a proper sim for it or hacktivate it. (requires pwnage tool which will make a custom and activated firmware for you.

  • Monty_1689

    but i m not good at computers…
    if you don’t mind me asking do you know that in Philippines (Manila) which network is capable to fix this?
    i have Globe sim card..
    Please if you could help me.. 

  • Rob

    Hi there,

    Sorry – I have no idea since I’m based in the UK. What network was the phone on when it was purchased, that’s the sim card you need, even if it’s a pay as you go (pre-pay) service sim and not contract.

    Hacktivation is your best bet, there are lots of guides on the Internet.

    Sorry we couldn’t help further.

  • Monty_1689

    no probs..
    thanks alot…

  • Thanks for this simple and straightforward guide.  I’d never jailbroken before as a lot of resources made it sound complicated which made me nervous.  The process went smoothly and I’m now a happy jailbroken iPhone 4 user! 🙂

  • Rob

    Brilliant. Thanks for the feedback! Enjoy!

  • jcarter

    i wanna do it but am worried if it dogges it up

  • Rob

    Well be reassured jailbreaking isn’t like it used to be years ago. It’s vey safe and if it doesn’t work for you just restore your device.

  • michael

    hi rob,how do i get ipsw file into itunes? it is in winrar. these might seem stupid questions! but i know very little about i have to use the wizard?ihave tried this,but it is still in zip not ipsw on my desktop.will you please try to make your answer as simple as possible?cos i am 70yrs plus not tech minded in any way.thankyou. p.s. trying to jailbreak ipad 1, 4.3.3

  • Rob

    Hi – the IPSW is an iTunes file and not an archive so you don’t need to open it in WinRAR or WinZip.

    If you are on a PC then open iTunes. Hold down the CTRL key on your keyboard and click the “Restore” button in iTunes. This allows you to search a location for the IPSW file, so you can locate the file you downloaded.

    Good luck!

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