How to Jailbreak and Unlock iPhone 3.1.3 With Redsn0w 0.9.4 [Mac OS X]

Written By Sam on 4 February 2010

Apple’s iPhone OS 3.1.3 is released yesterday which has got some bug fixes and other security updates. If you have a iPhone 3GS/3G please stay away from it as it will update your baseband to 05.12.01. No tools out there on the Internet currently works with 3.1.3. So if you want to preserver your unlock on iPhone 3GS/3G then do not think about the firmware 3.1.3 atleast for now.

The latest Mac version of Redsn0w 0.9.4 from the iPhone Dev-Team can be used to jailbreak iPhone 2G on 3.1.3 Firmware and also iPod Touch 1G and 2G older models. You cannot use redsn0w to jailbreak iPod Touch 3G, 2G MC models and also iPhone 3GS/3G. If you have a iPhone 3G you can jailbreak it with redsn0w without unlock.

How to Jailbreak and Unlock iPhone 3.1.3 With Redsn0w 0.9.4

  • Download the latest version of iTunes and update your iPhone to the latest 3.1.3 Firmware.
  • Download redsn0w 0.9.4 for Mac and also download iPhone OS 3.1.2 ipsw file(We need the older 3.1.2 ipsw).
  • Now launch redsn0w 0.9.4 and browse to the original iPhone OS 3.1.2 .ipsw file(iPhone1,1_3.1.2_7D11_Restore.ipsw). Redsn0w will check to see if the firmware is valid and once the IPSW is successfully identified click “Next”.
  • Now from the options select “Install Cydia” and “Unlock”. If you need to customize the logos you can select the options for customizing boot and recovery logos.
  • Please make sure your device is both OFF and PLUGGED IN to the computer. If it is not off, plug the device into the computer FIRST. Then, hold down the Power button until “Slide to Power Off” appears, and then slide to power off. Click “next” only when your device is BOTH off and plugged in.
  • Now redsn0w will show you some instructions to enter into Recovery mode.
    • Hold down the “Power” button and immediately without releasing the power button, also hold down the “Home” button. Without releasing the “Home” button, release the “Power” button and keep holding the “Home” button for 30 second or until the installation starts.
  • Your iPhone will reboot once it is jailbroken.
  • Now to Unlock your iPhone 2G running on 3.1.3 firmware, just install BootNeuter app from Cydia. It can be installed by adding “BigBoss & Planet-iPhones” repository in Cydia.
  • After installing BootNeuter restart your iPhone and after restarting just set the settings and your iPhone will be unlocked.

We are warning you again that this 3.1.3 Firmware jailbreak is strictly for iPhone 2G, iPod Touch 1G and older non-MC iPod Touch 2G models. If you have got an iPhone 3GS/3G and already unlocked your device the do not attempt to upgrade your firmware to 3.1.3.

17 Responses to “How to Jailbreak and Unlock iPhone 3.1.3 With Redsn0w 0.9.4 [Mac OS X]”

  1. fajewoa says:

    i know that there’s a redsn0w 0.9 for 3.1.2 but is there an ultras0w for baseband 5.11.07? updating to 3.1.2 will upgrade the baseband. if i jailbreak using redsn0w 0.9, can i use blacksn0w to unlock 5.11.07?

    • Samrat P says:

      Right now there is no unlocking tool for baseband 05.12.01. Upgrading to 3.1.3 will upgrade your baseband to 05.12.01. So do not upgrade to 3.1.3 firmware

      • Mark says:

        I accidently upgraded to 3.1.3 badeband 5:12:01. Is there anything i could do to restore it? Or is the iphone garbage.

  2. denise says:

    mark we are on the same boat… i did the same now we are stuck…let’s find out and we will informe each other ok…

    • Betti says:

      Same here… I had no idea about all this…
      So… It seems that we’re all waiting for a solution…
      Thank you for sharing anyway 🙂

  3. ali says:

    me too guys, i did jailbreaked my 3G iphone, but i couldn’t unlock it, and i am trying my best to unlock the sim…….we jut need to wait right???

  4. thomas says:

    I have the same shit, I accidently upgraded (automatically) to 3.1.3 baseband 05.12.01 and now i can’t use it anymore. i read something that it’s impossible until week 40!!!! please inform when it’s possible again, i am scr$%ed!

  5. Rex says:

    Please help out on how I can unlock my iphone,I upgraded to the newer version 3.1.3 baseband 05.12.01

    I want to know how soon I can be out of this mess, please.

  6. MASOOD says:

    please help me how i can unlock my iphone 3gs version 3.1.3
    pleassssssssssssssssssssssssssse help miiiiiiiii please

  7. jesse says:

    i downloaded redsn0w 0.9.4 but i dont get unlock option in it with other like intall cydia, new bootloader..etc…. can u plz tell me in with which version of redsnow i could unlock it..

  8. maver1ck says:

    have the same problem here been prowling the net for unlocks but no luck so far

  9. maria says:

    Could we downgrade from the 3.1.3 to the 3.1.2 version and then unlock it?

  10. ageuest says:

    how to jailbreak & unlock iphone 3gs 3.1.3 (complet instraction)
    thanks for your asome website.

  11. Lawrence says:

    How come after I JB, some service provide sin can not be use, but I follow the instuction and “click” the “unlock” box too.
    Please help to solve the problem for me.
    Thanks so much.

  12. deedee says:

    Omg I just did the dumbest move I locked my iphone now its updated to 3.1.3 do anybody no any way to unlock this or how to down grade back to 3.1.2

  13. langolier says:

    An AT&T representative’s error had effectively ‘bricked’ my 2g iPhone so that all I could get was the ’emergency’ connect to iTunes screen and following that, this SIM card does not appear to be supported even though it was their SIM. Worked with them for a week to try to get things corrected, to no avail, and their final judgment was that it had to be an “equipment” error. Why didn’t that surprise me?

    I’m old and have no real concept of what is going on here, but followed your directions exactly and now have an (apparently) jailbroken and unlocked 2g iPhone doing all the things an iPhone should do! I guess your stuff repairs equipment, too.


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