May 30, 2024
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Posted January 31, 2010 at 6:58pm by iClarified
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These are instructions on how to jailbreak your iPhone 3GS on the 3.1.2 firmware using RedSn0w for Mac. If you are already on firmware 3.1.2, do NOT update to firmware 3.1.3. The Windows version of this can be found here. The iPhone 3G version of this tutorial is here. The iPhone 2G version of this tutorial is here

This tutorial can be used to jailbreak before applying the BlackSn0w unlock. You can find instructions on how to apply the unlock here.

Step One
Create a folder on your desktop called Pwnage


Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 3.1.2 firmware from below and place it in the same folder.

3.1.2 (3GS): iPhone2,1_3.1.2_7D11_Restore.ipsw

Double click the redsn0w zip file to extract the redsn0w folder to the Pwnage folder.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Two
***If you are running iPhone OS 3.1.2 you may skip this step***

Connect your iPhone to the computer and launch iTunes.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Select your iPhone from the list of devices on the left. Now hold down Option and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Navigate to the Pwnage folder on your desktop and select the firmware ipsw. Click the Open button to continue.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Three
Once iTunes has finished updating your iPhone to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Four
Once RedSn0w opens click the Browse button
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Five
Select the firmware ipsw we placed in the Pwnage folder on our desktop then click Open
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Six
RedSn0w will ask you if this is a newer (fixed) model iPhone. Newer models of the iPhone 3GS have a fixed bootrom which requires you to connect your device to the computer each time you wish to reboot.

To find your serial number you can follow these instructions. The week number is usually the 4th and 5th digit of the serial number. For example, a serial number beginning with 88926 would be week 26 of 2009. 3GS units made week 45 or later will usually have a fixed bootroom. Before week 40 they usually have the older bootroom. Between weeks 40 and 45 the results vary.

If you believe your device has a fixed bootrom then press the Yes button. Otherwise press the No button.

If you accidentally select the wrong option you may have to do a full restore so please make this choice carefully.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Seven
Once the firmware has been verified click the Next button to continue.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Eight
RedSn0w will now prepare the jailbreak data
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Nine
From this window you can select the jailbreak options you would like. If you have already pwned your device check the Already pwned option.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Verbose boot displays detailed information on boot of your device and is generally only needed by developers and advanced users.

Make sure Cydia is selected. For this tutorial we will also select Custom boot logo and Custom recovery logo.

When you click to select each custom logo option a dialog window will appear asking you to select the image. Locate the image you would like to use then press the Open button.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

*Remember the rules for boot logos are: RGB or Grayscale format with Alpha channel and dimension below 320x480. If you would like to use the iClarified ones they can be found here: Boot Logo, Recovery Logo

Click the Next button to continue
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Ten
RedSn0w will now instruct you on how to put your iPhone into recovery mode. Disconnect you iPhone 3GS from the computer then power it off. Then hold down the Home button while reconnecting the device to the computer. Don't let go of the button until RedSn0w detects the iPhone and begins installation.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Eleven
Your iPhone will now reboot
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Twelve
RedSn0w will then begin uploading the new RAM Disk and kernel.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)

Step Thirteen
Once this is complete you will be notified that RedSn0w is done. Click the Finish button. When your iPhone finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.
How to Jailbreak Your iPhone 3GS on OS 3.1.2 Using RedSn0w (Mac)


*As usual a big thanks to the iPhone Dev-Team for their hard work and contribution to the iPhone community.
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Comments (20)
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Pos
Pos - June 26, 2010 at 4:54am
Hi, I have iphone 3GS 3.1.3 with base band 5.12.01 and old bootrom locked in emergency call. Please let me know if i will be able to jailbreak and unlock now or still I have to wait. Help please..
joe
joe - April 2, 2010 at 3:53am
Does this tutorial really work for the iPhone 3GS 3.1.3, I havn't seen that this tutorial works on the 3.1.3 firmwire before? Anyone who has succed to jailbreak their iPhone with this tutorial?
DApple
DApple - March 20, 2010 at 11:30am
I cant restore my 3GS 3.1.2 since itunes said this fw is not eligible (something like that).. any idea? thanks in advance!
zevilevi
zevilevi - March 28, 2010 at 4:22am
http://www.saurik.com/id/12 See "Bypassing the Overlord" This worked for me.
DApple
DApple - April 13, 2010 at 7:04am
how I can find /etc/hosts for mac osx?
myffia
myffia - March 2, 2010 at 11:54pm
same goes here! anyone have the solution? damn apple...
root
root - March 20, 2010 at 11:50am
Hi, I found the solution... we no need itunes at all (if you already JB or pwned)... Just use latest redsn0w ... that all..
Moodi
Moodi - March 20, 2010 at 12:03pm
Thanks Root can you please explain??? Thank you
Genetics
Genetics - February 10, 2010 at 2:20pm
I've got a 3GS, never JBen, 3.1.2 and 5.11.07 baseband... While the process goes all the way to completion, upon reboot, it does not seem that my iPhone is JBen at all, and I do not have any Cydia icon. I also cannot restore in step 2 with the IPSW in the tutorial - getting an apple error message. any thoughts?
Tom Grapendal
Tom Grapendal - February 4, 2010 at 10:18am
When will there be a fix for the restart problem? i´m so sick off it. that i have to have a computer du lock it ut if i have to restart the phone......... /Tom
Fernanda Tornaghi
Fernanda Tornaghi - February 4, 2010 at 10:06am
I have the "fixed" iphone that needs unlocking everytime I reboot with Blackra1n. Will I still have to unlock on rebooting if I use this new jailbrake?
Tom Grapendal
Tom Grapendal - February 1, 2010 at 12:00pm
have problem whid restarting. if i chouse Yes it go to Itunes and i have to do a fabrik reinstall why? this up date of redsnow should be Okey for my devise. i halve week 44....anybody who has the same problem?
Monkey
Monkey - February 1, 2010 at 10:57am
So I can use redsnow if I have the latest baseband? I though I had to use blacksnow?
Mike York
Mike York - February 1, 2010 at 10:39am
Cydia won't open after this. What to do? My 3GS is the 54th week.
Tjenk
Tjenk - February 1, 2010 at 6:57am
Any idea where to find a trusted !! custom ipsw for the 3GS? I need to keep my modem FW at 4.26 for the unlock. I guess that if I take the ipsw provided here as download link would also upgrade my modem FW and make the unlock with ultrasn0w impossible? Tom
Miguel
Miguel - February 1, 2010 at 8:09am
read the reply that I done to Phil You can do the full restore with 3.1.2 original firmware read this http://iphonejtag.blogspot.com/2009/11/blacksn0w-is-live.html
Phil
Phil - February 1, 2010 at 4:22am
Hm, confused now. I own the 3GS and checked the serial no (NOT the model no), 4th and 5th are 24 so obviously I have an older model. Now I need jailbreak and unlock and currently run software version 3.0 with modem fw 04.26.08. The tutorial states that I need to update to the newest FW 3.1.2 but doesn't that also update also my modem FW? I learned that the updated modem FW does not allow an unthethered unlock, i.e. I have to run unlock every time the battery dies. Is this now still correct? Or can I indeed use the latest redsn0w version, update to FW 3.1.2, have model FW updated too and still have an unthereed unlock? As I sadi, confused :-) Phil
Phil
Phil - February 1, 2010 at 9:14am
Thanks Miguel. But that is then indeed a tethered jailbreak as mentioned by GeoHot on his blog/site? And I understood that I can use redsn0w for an unthethered jailbreak instead? I do not want to run into the problem to have a cable and laptop at hand in case my battery dies...
James
James - January 31, 2010 at 11:12pm
Hey... I have an iPhone 3gs.. The serial # of it start with MB... Y do I still have rebooting problem? Any help???
jompao
jompao - February 1, 2010 at 5:02am
Is there any reson to use this instead of the very easy and fast blackra1n?? I have no interest in custom bootlogo. Used blackra1n on my 3GS and it is working fine.
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