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Jailbreak iOS 4 on iPhone 3GS [New Bootrom] with Sn0wbreeze
Hey All, iH8sn0w has just posted a guide on its forums, this guide is to Jailbreak iOS 4 on iPhone 3GS with New Bootrom, we already talked about this guide 2 days ago and Now you really can Do it, Just come with me after the jump..
As I told you before you have to be Saved your SHSH on saurik’s server of iPhone 3.1.2 (not 3.1.3), You should first Downgrade your device if you are on iOS 4 using the guide posted here.
If you didn’t save SHSH before of 3.1.2 then Stay away from this guide and wait for a new jailbreak guide or tool.
Note: This guide is tethered Jailbreak which means that whenever you turn off your iPhone, you have to re-connect it to your computer to get it on again.
Follow the guide as posted in iH8sn0w’s forum:
Pwning 4.0 on New Bootrom 3G[S] w/3.1.2 SHSH Blobs
I wrote this all on the road with my iPad, so sorry if there is any major Grammar errors. If anyone points out any errors, I’ll fix it up. Anyways…
I figured making a tool would take a bit too long. So, i’m going to write up this tutorial. It isn’t recommended for regular users.
**BEFORE PROCEEDING, ENSURE THAT YOU HAVE YOUR PHONE BACKED UP!**
WHAT YOU WILL NEED:
* An iPhone 3G[S] — new bootrom
* 3.1.2 SHSH blobs.
* difrnt’s iBSS grabber
* Payload Pwner for the 3GS.
* sn0wbreeze V1.6.2
* LibUSB (64-Bit users read carefully!!!)
* 3.1.2/4.0 3GS firmware downloaded. [Download iPhone 3.1.2 / Download iOS 4.0]
STEP A : Grabbing your 3.1.2 iBSS file.
Pointing your hosts :
I : If you have your shsh blobs saved on Cydia/Saurik’s server then follow this tutorial. — http://saurik.com/id/12
II : If you have it saved with TinyUmbrella, then download the GUI here. — http://thefirmwareumbrella.blogspot.com/
Restoring to grab the iBSS file.
I : Place your device in DFU.
II : Start up the iBSS/iBEC grabber.
III : Put the save folder on a new folder on your desktop.
IV : Hit “Start Monitoring”.
V : Now go back to iTunes and do SHIFT + Restore. Then browse for your 3.1.2 IPSW. You will need to restore
to 3.1.2 in order to pwn 4.0.
Saving your iBSS
I : After Restoring, Go to the folder that you have specified to save your iBSS file.
II : You will see folders like (Per**.tmp). Go into one of them, and you’ll see a folder called “Firmware”. Go there. Then go to the folder “dfu”.
III : Copy the iBSS file to a safe place, then you can remove the folder created by the iBSS Grabber.
STEP B : Creating custom 4.0 firmware.
I : Download sn0wbreeze from http://ih8sn0w.com and create your custom 4.0 ipsw. [How to Guide]
*Ignore the warnings after browsing for the ipsw.*
STEP C : Installing LibUSB for iRecovery
Run this mini tool to detect your O/S + Arch. — Windows + Arch. Detector
WARNING : IF LIBUSB IS NOT INSTALLED PROPERLY, YOUR USB MIGHT NO LONGER WORK!
Windows XP Users download this installer — LibUSB Installer
Windows Vista/7 users RUNNING 32-Bit:
* Download the installer and run it in compatibility mode for Windows XP.
If you are a 64-Bit user, follow this tutorial
Once LibUSB is installed iRecovery should be able to function now.
STEP D : Pwning iBSS + iBoot
I : Download this easy tool here — Payload Pwner for 3GS // It will help you create the payloads.
**SAVE THE PAYLOADS WHERE iBooty is.**
STEP E: iBooty Prep.
Most of you know of the utility “iBooty” that I made for Aki_nG.
It will work as long as you place all of the correct files there.
I : Download iBooty GUI here — iBooty for 3GS and Extract it.
II : Extract your Custom IPSW created by sn0wbreeze with 7-Zip or another un-archiver.
III : Grab the kernelcache and bring it into the same folder as ibooty.
Also grab the iBEC from the folder “FirmwaredfuiBEC.n88ap.RELEASE.dfu”
* Rename your iBSS 3.1.2 signed to “ibss312.dfu”
* Rename your Kernel 4.0-Custom to “kernel.40”
* Rename your iBEC 4.0-Custom to “ibec40.dfu”
Your folder should look like this :
– iboot.payload <– Created with Payload Pwner.
– exploitibss312 <– Created with Payload Pwner.
– ibec40.dfu <– Grabbed from Custom IPSW made by sn0wbreeze.
– irecovery.exe <– Comes with iBooty.
– readline5.dll <– Comes with iBooty.
– iBooty.exe <– Comes with iBooty.
– ibss312.dfu <– THIS NEEDS TO BE YOUR iBSS from the restore!
– kernel.40 <– Grab from Custom IPSW made by sn0wbreeze.
– sn0w.img3 <– Comes with iBooty.
STEP F: Restoring to 4.0 + Booting
*MAKE SURE YOU ARE ON 3.1.2 WHEN DOING THIS*
I : Run iBooty and Select “Prepare Device for Custom Firmware”. Run the Process and if you see a snow flake, you can proceed!
II : Now open iTunes and restore to the custom ipsw.
***WHEN DONE, YOUR DEVICE WILL HAVE A BLACK SCREEN AND NOT BOOT! ITS IN A DFU LOOP [THIS IS NORMAL!]***
STEP G : Booting
I : Just Re-Run iBooty and select “Boot It”. If all goes well it will boot!
After following the guide to Jailbreak, You will be Easily able to Unlock your iPhone 3GS on any Baseband Including 05.13.04 / 05.12.01 Using Ultrasn0w 0.93, Step by Step guide posted here.
Update 1: For people who couldn’t create “exploitibss312” or “iboot.payload“, I uploaded them to you due to asking for them! Download both files from Here.
Update 2: For Mac users, I got another guide here.