Jailbreak iPhone 4, 3GS iOS 4.3.1 with Sn0wBreeze 2.4b [Guide]

Sn0wBreeze 2.4b is out to jailbreak iOS 4.3.1 on iPhone 4, 3GS, iPod Touch 4G, 3G, and iPad 1. These are the steps to jailbreak iPhone 4, iPhone 3GS on iOS 4.3.1 firmware with Sn0wBreeze 2.4b but first read the IMPORTANT part.

Important

  • Sn0wBreeze 2.4 is still in beta.
  • Sn0wBreeze 2.4b provides a tethered jailbreak. You will need your computer every time you reboot for it to work.
  • ultrasn0w now works for basebands (01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00)
  • ultrasn0w is NOT compatible with the following basebands! (02.10.04 / 03.10.01 / 04.10.01 / 05.14.02 / 05.15.04)
  • iPhone 3GS users can upgrade to 06.15.00 baseband now under Unlocks section in Expert. Upgrading your iPhone 3GS baseband to the 06.15.00 iPad baseband hack to unlock MAY cause you to lose your GPS!
  • Sn0wBreeze is available for Windows OS only.
  • Steps to jailbreak all iDevices using Sn0wbreeze are almost identical.

Supported Devices

Let’s jailbreak iPhone 3GS, iPhone 4 iOS 4.3 firmware using Sn0wbreeze jailbreak.

How to Jailbreak iPhone 4, 3GS iOS 4.3 with Sn0wBreeze

Step 1

Download the required stuff linked below and put them on your desktop.

Step 2

Run the Sn0wBreeze.exe. Hit Ok and then Close Credits button. and then hit the next button.

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Step 3

Either drag & drop the iOS 4.3.1 firmware file in the given drop-box on Sn0wbreeze window or hit the Browse button and select the downloaded iOS 4.3.1 IPSW file for your iDevice.
Sn0wBreeze will identify the IPSW firmware file. When done, hit the next button.

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Step 4

Now select the Expert Mode and Hit next button.
Then select General.

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Step 5

iPhone Users:

**If you depend on unlock make sure Activate The iPhone [Hacktivate] option is checked/selected.
Then keep hitting Next.

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Step 6

Now select the Build IPSW option and hit next.
Sn0wBreeze will start building custom firmware to jailbreak your iPhone 4, 3GS, idevice. Since the building process takes several minutes to complete, you can either choose to play PacMan or stick with the Spinner.
Once Done! Hit the OK button. (Custom firmware can be found on desktop along with iBooty folder)

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Step 7

Now follow the on screen instructions to put your iDevices into Pwned State. Sn0wBreeze instructions are important to follow because this will put iDevice into Pwned DFU state NOT the simple DFU mode.

  • Hold Power + Home buttons for 10 seconds
  • Now release the Power button but keep holding the Home button for 10-30 more seconds
  • Your device should now be in DFU mode

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Sn0wBreeze will prompt you once you’re into Pwned DFU state.

Step 8

Now open iTunes, Hold down the Shift key and hit the Restore button.
Browse and select the custom firmware that we just created, from the desktop.

iTunes will start restoring iOS 4.3.1 on your iPhone/iPad/iPod Touch. Once the restore process is complete, your device might stuck at the Apple logo. Don’t panic, follow the next step.

Step 9 – Booting in Tethered Mode

Like I told you earlier, it’s a tethered jailbreak.

On your desktop, there’ll be a new folder named iBooty-for-4.3.1. Open the folder and run the iBooty.exe.
Select your device from the drop down menu (bottom-right) and hit the start button.

Follow the on screen instructions to put your iDevice into DFU mode.

  • Hold Power + Home buttons for 10 seconds
  • Now release the Power button but keep holding the Home button for 10-30 more seconds
  • Your device should now be in DFU mode

Once you’re into DFU mode, iBooty will do the rest and your iPhone, iPad or iPod touch will boot into jailbroken state!

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Jailbreak iOS 4.3.1

Unlock iOS 4.3.1

Unlock iOS 4.3.1 with UltraSn0w 1.2.1

19 comments… add one
altecmayank March 28, 2011, 5:25 pm

Good news… But I’l still hold on to the older but Untethered ios 4.2 something 🙂 … thanks for the Info iphoneheat.

andrebarbosanet March 28, 2011, 6:03 pm

Hello,

Any news about jailbreak iPad 2?

Thank you.

noname March 28, 2011, 8:57 pm

Any info on Greenpois0n 4.3.1 for Windows 7?!

th1604 March 29, 2011, 4:01 am

i followed the same thing but got stuck at restoring the iphone. it said that “the iphone could not be restored because the firmware is not compatible”
please help!

rassa March 29, 2011, 4:35 am

cmon ipad 2 jailbreak

alpat187 March 29, 2011, 11:49 am

Hi, i did al that from above, it works but i have no signal now, what to do next? thx

zviad March 30, 2011, 1:59 pm

I can’t find iBooty-for-4.3.1 on my desktop. I have windows 7. any idea?

raidensai March 31, 2011, 6:08 am

This is fake my iPhone 4 iOS 4.3 do not jailbreak

robertguero March 31, 2011, 6:36 am

Have tried 3 times. I do not get Cydia and Safari crashes.

Parsapple March 31, 2011, 6:10 pm

HI, i have an iphone 4 with baseband 03.10.01 on ios 4.2.1, if i upgrade eo ios 4.3.1 and jailbreak will my baseband change? will i be able to unlock my iphone 4??
please answer as soon as possible, thnx

aeon March 31, 2011, 7:12 pm

hi, after i JB(jailbreak) success, i cant make a call?? no simcard showing…can help??

akz999 April 1, 2011, 3:06 am

Hey There,

I cooked custom firmware for a 3GS new bootrom, upgrading from 4.0.

I use sn0wbreeze a lot with my iPhone 4.

This time the 3GS is stuck on apple logo after restoring 4.3.1 ipsw with custom firmware. I tried iboot but the phone doesn’t boot; it’s stuck on apple logo!
If i choose just babseband preservation, it works and the phone hacktivates but doen’t have cydia to unlock!
Any ideas?

QrafZebo April 1, 2011, 9:03 pm

Hi, I’v the errors when i tride restor the costom fremware from Itunes 10.2.1.1.. Pleas healp me ……
Error is that ……..

the Iphone could not be restore.An unknown error occurred (1)

Nuno Neves April 4, 2011, 12:32 am

I install everything like it says in the tutorial. But i get stuck in recovery mode
[IMG]http://i29.photobucket.com/albums/c293/nuno_neves/4808cd031900x300png.png[/IMG]
like it shows on the picture. Ibooty and tinyumbrella doesn’t work.

SL May 4, 2011, 8:47 pm

Please Help , the iphone “Iphone” could not be restore. An unknown error occured. Now i can’t even on my Iphone…pls help!!!

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