How to Jailbreak iOS 4.1 Beta on iPod touch 3G / 2G

With Sn0wbreeze 1.8 for Windows, you can now create custom firmware files of iOS 4.1 Beta for iPod touches which are already jailbroken on iOS 4.x. Currently, only iPhone 3GS (old bootrom pwned on iOS 4.x, and new bootrom pwned on 3.1.2 or with 3.1.2 SHSH blobs), iPod touch 2G (non-MC model, and already jailbroken on iOS 4.x), and iPod touch 3G and 2G (MC model) pwned on 3.1.2 or with 3.1.2 SHSH blobs are supported. So if you qualify any of these requirements, then you are good to go for a iOS 4.1 Beta jailbreak with sn0wbreeze 1.8. iPhone 3G users will have to jailbreak using Redsn0w, guide for which is posted here.

The instructions for jailbreaking with Sn0wbreeze 1.8 as usual are exactly similar to the instructions we posted earlier for iPhone 3GS. Simply download iOS 4.1 Beta for your version of iPod touch, and then follow the complete step by step instructions posted herewhich will guide you on how to create custom firmware files. Once you have created a custom firmware file, you can simply restore to it via iTunes 9.2 to complete the jailbreakprocess.

More Coverage >> Jailbreak iOS 4 iPod touch 3G and iPod touch 2G MC Model
Feel free to ask me any question here should you run into any problem during thejailbreak process.
Download iTunes 9.2 for Windows and Mac OS X
Download iOS 4.1 for iPhone 3GS, iPhone 3G and iPod touch
Download .NET Framework 3.5 (required to run Sn0wbreeze)
Download Sn0wbreeze 1.8 (Windows Only) [Fast Mirror link]
You may also like to check out:

• The iPhone 4 has been Unlocked ! [Video]
• How to Jailbreak and Unlock iOS 4.0.1 on iPhone 3GS, iPhone 3G with Redsn0w
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide] – Mac version here
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

Jailbreak iOS 4.1 with Sn0wbreeze [Custom Firmware Windows]

Sn0wbreeze 1.8 has been released. This is by the same developer who is behind other popular iPhone jailbreak tools such as sn0wbreeze 1.6 and 1.7 for iOS 4, sn0wbreeze for iPhone 3.1.3, f0recast and BlackBreeze. Just like the PwnageTool for Mac, Sn0wbreeze 1.8 can jailbreak iPhone 3GS (old bootrom, and already pwned on iOS 4.x), iPod touch 2G (non MC model) and iPod touch 3G on iOS 4.1 Beta. iPhone 3G users will have to jailbreakusing Redsn0w, guide for which is posted here.

So if you have a Windows machine, you can use Sn0wbreeze 1.8 to create custom firmware files without the upgraded baseband. Again, only the following devices are supported.

• iPhone 3GS (old bootrom and already jailbroken on iOS 4.x)
• iPod touch 2G (non MC model)
• iPod touch 3G

Warning: If you rely on an unlock, DO NOT update to iOS 4.1.
Instructions are as follows.
Step 1: Download and install the latest version of iTunes.
Step 2: Now start iTunes and sync your iPhone with your PC so that it backs-up all your important data including settings, apps, music, contacts and photos.
Step 3: Download Sn0wbreeze and the original iOS 4.1 firmware file for your version of iPhone or iPod touch. Move all these files to your desktop.
Step 4: Start Sn0wbreeze and select “Simple Mode”.

Step 5: Sn0wbreeze will now ask you to browse for your .ipsw file. Select the correct iOS 4.1 firmware .ipsw file by clicking the “Browse” button. Sn0wbreeze will verify the selected file and then will present you with following screen.

Step 6: Click on "Yes" when Sn0wbreeze asks you “Do you want to activate your iPhone?” for hacktivation. Click on “No” only if you are on an officially supported carrier like AT&T.

Step 7: Sn0wbreeze will now create the custom .ipsw file for your iPhone which will be jailbroken.

Step 8: Now you will have to restore your iPhone to this custom firmware 4.1 that you just cooked using Sn0wbreeze for your iPhone. Click on your phone from the sidebar in iTunes and then press and hold left “Shift” button on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes and then release the “Shift” button.
This will make iTunes prompt you to select the location for your custom firmware 4.1. Select that custom .ipsw file and click on “Open”.
Step 9: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps. Be patient at this stage and don’t do anything silly. Just wait while iTunes installs the new iOS 4.1 on your iPhone. Your iPhone screen at this point will be showing a progress bar indicating installation progress. After the installation is done, iPhone will restart automatically and you should now have a fully jailbroken iPhonerunning on iOS 4.1.
Step 10: Once you are done with the jailbreak process. You can now restore all your settings, apps, music, contacts and photos to the newly installed iOS 4.1 by restoring the backup that you made in Step 2 from iTunes.
Feel free to ask me any question here should you run into any problem during the jailbreak process.
Download iTunes 9.2 for Windows and Mac OS X
Download iOS 4.1 for iPhone 3GS, iPhone 3G and iPod touch
Download .NET Framework 3.5 (required to run Sn0wbreeze)
Download Sn0wbreeze 1.8 (Windows Only) [Fast Mirror link]
Disclaimer: This guide is for testing & educational purposes only. Follow it on your own risk. I’m not responsible for any loss of important data or malfunctioning of your iPhone.
You may also like to check out:

• The iPhone 4 has been Unlocked ! [Video]
• How to Jailbreak and Unlock iOS 4.0.1 on iPhone 3GS, iPhone 3G with Redsn0w
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide] – Mac version here
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

Unlock iOS 4.0.1 with Ultrasn0w [How to Guide]

iOS 4.0.1 was released earlier today for iPhone 4, 3GS and 3G. Fortunately for all iPhone unlockers, the baseband wasn’t upgraded from 05.13.04, which means you can unlock your iPhone even on the latest iOS 4.0.1 firmware. Since currently there is no jailbreak tool available for iPhone 4 and iPhone 3GS (new bootrom), and the current jailbreak tools for iPhone 3GS (old bootrom) are not compatible with iOS 4.0.1, so the only device which can currently be jailbroken and unlocked on iOS 4.0.1 is iPhone 3G.
How to: Jailbreak iPhone 3G on iOS 4.0.1:
Step 1: Follow the complete guide posted here to jailbreak your iPhone 3G using Redsn0w 0.9.5b5-5 on iOS 4.0.1.
How to: Unlock iPhone (Any Baseband) on iOS 4.0.1: 
Step 2: Once you are done with the jailbreak, you can now unlock your iPhone on any baseband using ultrasn0w 0.93 from Cydia. To do this:

• Start “Cydia” on your iPhone.
• Touch on “Manage” tab on the bottom.
• Now touch on “Sources” as seen in the screenshot below:

• Touch on “Edit” and then on “Add”. You will be prompted to enter a url source as seen in the screenshot below. Type “http://repo666.ultrasn0w.com” and touch on“Add Source”.

Cydia will now automatically update your sources by following a series of automated steps.

• After installation is completed. Search for “ultrasn0w 0.93” in Cydia and install this application. This app will automatically unlock your iPhone so that you can use it with any carrier.

Step 3: Now simply restart your iPhone and voila! you should now have a fully unlocked iPhone 3G on iOS 4.0.1.
Disclaimer: This guide is for testing & educational purposes only. I’m not responsible for any loss of important data or malfunctioning of your iPhone.
You may also like to check out:

• The iPhone 4 has been Unlocked ! [Video]
• Unlocked iPhone 4 Available in UK, France and Canada
• How to Jailbreak and Unlock iOS 4.1 on iPhone 3G and iPod touch 2G with Redsn0w [Downgrade]
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

How to Jailbreak iOS 4.0.1 with Redsn0w [Guide]

iOS 4.0.1 has been released for iPhone 4, 3GS and 3G. While the iPhone 4 and 3GS users will have to wait for a new jailbreak tool, iPhone 3G can go ahead and jailbreak their phone on iOS 4.0.1 using Redsn0w 0.9.5b5-5. Again, this is strictly for iPhone 3G only. All other iOS based devices will be jailbreakable once Comex releases his new jailbreak tool.


Step 1: Download iOS 4.0.1 for your version of iPhone. Download links are posted here.
Step 2: Update to this latest firmware using the IPSW file you just downloaded via iTunes 9.2.
Step 3: Start Redsn0w 0.9.5b5-5 (download link given below) and point it to iOS 4 (Final Version), and not iOS 4.0.1 firmware file to proceed with the jailbreak.

Step 4: Now select “Install Cydia” and click “Next”.

Step 5: Now make sure your device is both OFF and PLUGGED IN to the computer before you click “Next”.
Step 6: Connect your device in recovery mode by pressing the Power and buttons continuously.

At this stage you will be presented with a screen where you will have to quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.
Step 7: Sit back and enjoy while redsn0w will do all the rest for you. Once done, youriPhone and/or iPod touch will restart automatically and you will find it jailbroken on the latest iOS 4.0.1 firmware.
How to Unlock 05.13.04, 05.12.01 to 04.26.08 on iOS 4.0.1 Using Ultrasn0w
Follow the complete step by step guide posted here to unlock iPhone 3G, on iOS 4.0.1, on any baseband using Ultrasn0w 0.93.
Download iOS 4.0.1 for iPhone 3G
Download Redsn0w 0.9.5b5-5 for Mac
Download Redsn0w 0.9.5b5-5 for Windows
Disclaimer: This guide is for testing & educational purposes only. I’m not responsible for any loss of important data or malfunctioning of your iPhone.
You may also like to check out:

• The iPhone 4 has been Unlocked ! [Video]
• Unlocked iPhone 4 Available in UK, France and Canada
• How to Jailbreak and Unlock iOS 4.1 on iPhone 3G and iPod touch 2G with Redsn0w [Downgrade]
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

Downgrade iOS 4.1 iPhone 4, 3GS, 3G and iPod touch to iOS 4 / iPhone 3.1.3 / 3.1.2 [How to Guide]

iOS 4.1 Beta was seeded to developers yesterday. Since the iOS 4.1 is currently onlyjailbreakable on iPhone 3G and iPod touch 2G (non-MC model), you may want to downgrade your other iOS based devices from iOS 4.1 so that you can jailbreak them on iOS 4, or iOS 3.1.3 / 3.1.2 (formerly iPhone 3.1.3 or 3.1.2).
The following step by step guide will help you rollback / downgrade to iOS 4, iPhone 3.1.3 and 3.1.2 from iOS 4.1 Beta as long as you have SHSH blobs saved for the respective firmwares for iPhone 4, iPhone 3GS, iPhone 3G and iPod touches.


Step 1: Download the required old ipsw firmware files. (Download links: iOS 4, 3.1.3,3.1.2)
Step 2: Put your device into DFU mode (not recovery mode).

• Connect your iPhone to your computer.
• Turn iPhone off.
• Start iTunes.
• Hold Power and Home buttons together for 10 seconds or so.
• Release Power button but keep holding the Home button until your computer recognizes a new USB device.
• iTunes will now recognize your iPhone.

Note: Your iPhone screen at this time should be blank (black in color), if not, then you are most likely in Recovery Mode, not DFU mode.
(Step 3 is for iPhone 4 and iPhone 3GS users only. If you are on iPhone 3G or iPod touch 2G (non-MC model), skip Step 3 and continue from Step 4)
Step 3: This step is applicable to iPhone 4, iPhone 3GS, iPod touch 3G and iPod touch 2G(MC model) which have their SHSH blobs (ECID SHSH) saved on Cydia for the firmware you downgrading on. If you don’t have your SHSH files saved, you cannot downgrade the mentioned devices.
So what we will do is to trick iTunes into thinking that it is watching Apple servers, while in real, we are going to change the address to Saurik’s server.

• Navigate to C:\Windows\System32\drivers\etc\ and locate “hosts” file.

Mac users can get to “/etc/” directory by going through “Go –> Go to Folder” from Finder.

• Open this “hosts” file in Notepad (for Windows) or TextEdit (for Mac OS X) and add this

74.208.105.171 gs.apple.com

line as shown in the screenshot below:

Now simply save this file and you are good to go!
NOTE for Windows 7 and Vista: Start “Notepad” with Administrator privileges by right clicking on “Notepad” app, and click on “Run as Administrator“ option.
Step 4: You will now have to restore your iPhone or iPod touch to the firmware you downloaded in Step 1. Click on your phone icon from the sidebar in iTunes. Now press and hold left “alt” (option) button on Mac (Left “Shift” button on Windows) on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes and then release this button.

This will make iTunes prompt you to select the location for your downloaded firmware file. Select that ipsw file and click on “Open”.
Step 5: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps. Be patient at this stage and don’t do anything silly. Just wait while iTunes installs firmware on your iPhone or iPod touch. Your iPhone screen at this point will be showing a progress bar indicating installation progress. Now at some point, iTunes will throw 1011, 1013 or 1015 error at you. This is normal, just ignore this error as the firmware has already been successfully installed on the device.
Step 6: Now you will need to exit your device from Recovery Mode. To do this, download a program called RecBoot (Windows / Mac). Run it and the click on “Exit Recovery Mode” button. Your device will now restart normally.

This is it, you should now be able to jailbreak your device on this older OS.  For iPhone 3.1.2 firmware, you can use blackra1n, PwnageTool, redsn0w, sn0wbreeze, ultrasn0wand blacksn0w to jailbreak and unlock your iPhone and iPod touch. For iPhone 3.1.3 firmware for iPhone 2G, 3G, 3GS and iPod touch 1G/2G, you can use redsn0w 0.9.3,redsn0w 0.9.4, sn0wbreeze, PwnageTool 3.1.5. Unlocking can be done using ultrasn0w orblacksn0w. iPhone 3.1.3 (on devices with new bootrom and baseband) can use Spirit to jailbreak iPhone 3GS/3G and iPod touch 3G/2G.
You may also like to check out:

• Fix 1604, 1600 Error During iOS 4 Custom Firmware Restore in Tunes
• Save SHSH Blobs (ECID SHSH) of iOS 4 on Windows and Mac [iPhone 4 Guide Here]
• Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide] – Mac version here
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

How to Jailbreak iOS 4.1 Beta with Redsn0w [Guide]

Yes you read that right ! The newly released iOS 4.1 is jailbreakable using Redsn0w 0.9.5b5. All you need is the latest iOS 4.1 firmware for iPhone 3G or iPod touch 2G (non-MC Models) and you can jailbreak it using Redsn0w on Windows and Mac. Again, this is strictly for iPhone 3G and iPod touch 2G (non-MC models) only. If your iPhone 3G relies on an unlock, you MUST STAY AWAY from iOS 4.1 for now.

Full set of instructions on how to to jailbreak iPhone 3G and iPod touch 2G on iOS 4.1 using Redsn0w 0.9.5 can be found here. Please read all the instructions carefully beforeupgrading and jailbreaking your phone on iOS 4.1.
Download iOS 4.1
Download Redsn0w 0.9.5b5-5 for Mac
Download Redsn0w 0.9.5b5-5 for Windows
Download iTunes 9.2 for Windows and Mac
You may also like to check out:

• The iPhone 4 has been Unlocked ! [Video]
• Unlocked iPhone 4 Available in UK, France and Canada
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest iPhone jailbreaking and unlocking releases.


Source: redmondpie

Jailbreak iOS 4 on iPod touch 3G and iPod touch 2G MC Model

Sn0wbreeze 1.7 for 4.0 has been released. Just like PwnageTool 4.0 / 4.01 for Macs, you can now create custom pwned / jailbroken ipsw files on Windows too which can now jailbreak all iOS devices (except iPhone 4) on iOS 4, including iPhone 3GS (new bootrom),iPod touch 2G (MC models) and iPod touch 3G. But there is a catch to it! You will need to have their SHSH blobs saved for iOS 3.1.2 in order to successfully jailbreak these devices on iOS 4. Also the jailbreak for iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G on iOS 4 will be tethered, which means whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on.

The step by step guide to jailbreak these devices is almost exactly similar to the last release. Simply follow the guide posted here to jailbreak your iPod touch on iOS 4 using Sn0wbreeze 1.7. Once you have created a custom firmware file, you can simply restore to it via iTunes 9.2. If there are any changes, we will redo the guide and post it again here.

If you don’t have your 3.1.2 (NOT 3.1.3) SHSH blobs (ECID SHSH) files saved, you will have to then wait for the next version of Spirit which is likely to be released as soon as Apple releases the next firmware update i.e. iOS 4.0.1 / 4.1 and it will support all iOS devices including iPhone 4.
Download Sn0wbreeze 1.7 for Windows
You may also like to check out:

• Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide] – Mac version here
• How to Jailbreak iPhone 3GS on iOS 4, which is already Jailbroken Using Spirit with Spirit2Pwn
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

Jailbreak iPhone 3GS New Bootrom on iOS 4 with Sn0wbreeze

Sn0wbreeze 1.7 for 4.0 (for Windows) has been released. This release supports iPhone 3GS (old and new bootrom), iPhone 3GS, iPod touch 2G (MC and non-MC models), and iPod touch 3G. Though iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G will have to be either on 3.1.2 firmware, or will need to have their SHSH blobs saved for iOS 3.1.2 in order to successfully jailbreak these devices on iOS 4. Also thejailbreak for iPhone 3GS (new bootrom), iPod touch 2G (MC models) and iPod touch 3G oniOS 4 will be tethered, which means whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on.

The step by step guide to jailbreak these devices is almost exactly similar to the last release. Simply follow the guide posted here to jailbreak your iPhone on iOS 4 using Sn0wbreeze 1.7. Once you have created a custom firmware file, you can simply restore to it via iTunes 9.2. If there are any changes, we will redo the guide and post it again here.

Those of you who are using Mac OS X will have to follow this manual guide posted here to jailbreak iPhone 3GS (new bootrom), iPod touch MC models and iPod touch 3G – all tethered.
Once you have jailbroken your phone, you can unlock it using ultrasn0w 0.93 (on anybaseband), guide for which is posted here.
If you don’t have your 3.1.2 (NOT 3.1.3) SHSH blobs (ECID SHSH) files saved, you will have to then wait for the next version of Spirit which is likely to be released as soon as Apple releases the next firmware update i.e. iOS 4.0.1 / 4.1 and it will support all iOS devices including iPhone 4.
Download Sn0wbreeze 1.7 for Windows
You may also like to check out:

• Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide] – Mac version here
• How to Jailbreak iPhone 3GS on iOS 4, which is already Jailbroken Using Spirit with Spirit2Pwn
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

Jailbreak iOS 4 on iPhone 3GS (New Bootrom) with SHSH Blobs [How to Guide]

iH8sn0w – the developer behind popular iPhone jailbreak tools such as sn0wbreeze for iPhone 3.1.3 / 4.0, f0recast and BlackBreeze has just written a detailed tutorial on how to jailbreak iPhone 3GS (with new bootrom) on iOS 4. But as I mentioned earlier, there is a little catch to it.

1) it is a tethered jailbreak (whenever you turn off your phone, you will need to re-connect it to a computer to be able to turn it back on) and

2) it will only work for those devices which have their SHSH blobs (ECID SHSH) files for3.1.2 (NOT 3.1.3) saved on Cydia.

If you meet all the requirements, and have lots of patience, you can follow the guide posted below to jailbreak your iPhone 3GS (with new bootrom) on iOS 4.
Warning Note: All the standard warnings apply. This is for advanced users only. Only proceed if you think you know your iPhone inside out.

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 (http://bit.ly/3QLb5S)
* Payload Pwner for the 3GS. (http://www.mediafire.com/?jy0wzomw2jk)
* sn0wbreeze V1.6.2
* iBooty (http://www.mediafire.com/?qwzzjhziwz0)
* LibUSB (64-Bit users read carefully!!!)
* 3.1.2/4.0 3GS firmware downloaded. [Download iPhone 3.1.2 / DownloadiOS 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  (http://www.mediafire.com/?imyzm2t3zam)
*********
WARNING : IF LIBUSB IS NOT INSTALLED PROPERLY, YOUR USB MIGHT NO LONGER WORK!
*********
Windows XP Users download this installer — LibUSB Installer (http://www.mediafire.com/?zyy0mjthhij)
*********
Windows Vista/7 users RUNNING 32-Bit:
* Download the installer (http://www.mediafire.com/?zyy0mjthhij) and run it in compatibility mode for Windows XP.
*********
If you are a 64-Bit user, follow this tutorial – (http://bit.ly/9N423f)
*********
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 (http://www.mediafire.com/?qwzzjhziwz0) 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 "Firmware\dfu\iBEC.n88ap.RELEASE.dfu"
IV :
* 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!
——-
Enjoy!
——-

Once you have jailbroken your phone, you can unlock it using ultrasn0w 0.93 (on anybaseband), guide for which is posted here.
Again, this is currently for iPhone 3GS with new bootrom only. Apparently, a similar guide for iPod touch (MC models) and iPod touch 3G is also in works. Oh and a tool to automate all this procedure will be released (no ETA) some time later. Stay tuned for more!
You may also like to check out:

• iPhone 4 Jailbroken Already !
• How to Jailbreak iPhone 3GS on iOS 4, which is already Jailbroken Using Spirit with Spirit2Pwn
• How to Unlock iOS 4 with Ultrasn0w and Blacksn0w on 05.13.04 Baseband [Guide]
• How to Jailbreak iOS 4.0 on iPhone 3GS, iPhone 3G and iPod touch 2G using Redsn0w, PwnageTool 4.0 (Windows)

You can follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

Source: redmondpie

iPhone 3G/3Gs Model Numbers Country and Carrier

Country
Carrier
Locked to carrier
iPhone 3G Model Numbers
iPhone 3GS Model Numbers

Belgium
Mobistar

MB489NF/A
MB496NF/A
MB500NF/A
MC131NF/A
MC132NF/A
MC133NF/A
MC134NF/A
CzechRepublic
O2

MB489CZ/A
MB496CZ/A
MB500CZ/A
MC131CZ/A
MC132CZ/A
MC133CZ/A
MC134CZ/A
CzechRepublic
T-Mobile

MB490CZ/A
MB497CZ/A
MB501CZ/A
MC139CZ/A
MC140CZ/A
MC141CZ/A
MC142CZ/A
CzechRepublic
Vodafone

MB489CZ/A
MB496CZ/A
MB500CZ/A
MC131CZ/A
MC132CZ/A
MC133CZ/A
MC134CZ/A
Greece
Vodafone

MB489GR/A
MB496GR/A
MB500GR/A
MC131GR/A
MC132GR/A
MC133GR/A
MC134GR/A
Hong Kong
3

MB489ZP/A
MB496ZP/A
MB500ZP/A
MC131ZP/A
MC132ZP/A
MC133ZP/A
MC134ZP/A
Italy
TIM

MB489T/A
MB496T/A
MB500T/A
MC131T/A
MC132T/A
MC133T/A
MC134T/A
Italy
Vodafone

MB489T/A
MB496T/A
MB500T/A
MC131T/A
MC132T/A
MC133T/A
MC134T/A
Macau
3

MB489ZP/A
MB496ZP/A
MB500ZP/A
MC131ZP/A
MC132ZP/A
MC133ZP/A
MC134ZP/A
New Zealand
Vodafone

MB489X/A
MB496X/A
MB500X/A
MC131X/A
MC132X/A
MC133X/A
MC134X/A
Singapore
SingTel

MB489ZA/A
MB496ZA/A
MB500ZA/A
MC131ZA/A
MC132ZA/A
MC133ZA/A
MC134ZA/A
Slovakia
Orange

MB489SL/A
MB496SL/A
MB500SL/A
MC131SL/A
MC132SL/A
MC133SL/A
MC134SL/A
Saudi Arabia
Mobily

MB489AB/A
MB496AB/A
MB500AB/A
MC131AB/A
MC132AB/A
MC133AB/A
MC134AB/A
United Arab Emirates
etisalat

MB489AB/A
MB496AB/A
MB500AB/A
MC131AB/A
MC132AB/A
MC133AB/A
MC134AB/A
South Africa
Vodacom

MB489SO/A
MB496SO/A
MB500SO/A
MC131SO/A
MC132SO/A
MC133SO/A
MC134SO/A

Taiwan
Chunghwa Telecom

MB489TA/A
MB496TA/A
MB500TA/A
MC131TA/A
MC132TA/A
MC133TA/A
MC134TA/A

Turkey
TurkCell

MB489TU/A
MB496TU/A
MB500TU/A
MC131TU/A
MC132TU/A
MC133TU/A
MC134TU/A
Russia
MegaFon

MB489RS/A
MB496RS/A
MB500RS/A
MC131RS/A
MC132RS/A
MC133RS/A
MC134RS/A
Russia
MTS

MB489RS/A
MB496RS/A
MB500RS/A
MC131RS/A
MC132RS/A
MC133RS/A
MC134RS/A
Russia
Beeline

MB489RS/A
MB496RS/A
MB500RS/A
MC131RS/A
MC132RS/A
MC133RS/A
MC134RS/A

Luxembourg
Vox Mobile

MB489NF/A
MB496NF/A
MB500NF/A
MC131NF/A
MC132NF/A
MC133NF/A
MC134NF/A

Luxembourg
LUXGSM

MB489FB/A
MB496FB/A
MB500FB/A
MC131FB/A
MC132FB/A
MC133FB/A
MC134FB/A

Luxembourg
Tango

MB489FB/A
MB496FB/A
MB500FB/A
MC131FB/A
MC132FB/A
MC133FB/A
MC134FB/A





Argentina
Claro

MB489LE/A
MB496LE/A
MB500LE/A
MC131LE/A
MC132LE/A
MC133LE/A
MC134LE/A
Argentina
Movistar

MB489LE/A
MB496LE/A
MB500LE/A
MC131LE/A
MC132LE/A
MC133LE/A
MC134LE/A
Austria
One

MB489FD/A
MB496FD/A
MB500FD/A
MC131FD/A
MC132FD/A
MC133FD/A
MC134FD/A
Australia
Optus

MB489X/A
MB496X/A
MB500X/A
MC131X/A
MC132X/A
MC133X/A
MC134X/A
Australia
Telstra

MB489X/A
MB496X/A
MB500X/A
MC131X/A
MC132X/A
MC133X/A
MC134X/A
Australia
Vodafone

MB489X/A
MB496X/A
MB500X/A
MC131X/A
MC132X/A
MC133X/A
MC134X/A
Chile
Claro

MB489LZ/A
MB496LZ/A
MB500LZ/A
MC131LZ/A
MC132LZ/A
MC133LZ/A
MC134LZ/A
Chile
TMC

MB489LZ/A
MB496LZ/A
MB500LZ/A
MC131LZ/A
MC132LZ/A
MC133LZ/A
MC134LZ/A
Colombia
Comcel

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Colombia
Movistar

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Ecuador
Porta

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Ecuador
Movistar

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
El Salvador
Claro

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
El Salvador
Movistar

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Estonia
EMT

MB489EE/A
MB496EE/A
MB500EE/A
MC131EE/A
MC132EE/A
MC133EE/A
MC134EE/A
Finland
Sonera

MB489KS/A
MB496KS/A
MB500KS/A
MC131KS/A
MC132KS/A
MC133KS/A
MC134KS/A
France
Orange

MB489NF/A
MB496NF/A
MB500NF/A
MC131NF/A
MC132NF/A
MC133NF/A
MC134NF/A
Guatamela
Claro

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Guatamela
Movistar

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Hungary
T-Mobile

MB490MG/A
MB497MG/A
MB501MG/A
MC139MG/A
MC140MG/A
MC141MG/A
MC142MG/A
Honduras
Claro

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
India
Airtel

MB489HN/A
MB496HN/A
MB500HN/A
MC131HN/A
MC132HN/A
MC133HN/A
MC134HN/A
Liechtenstein
Orange

MB489FD/A
MB496FD/A
MB500FD/A
MC131FD/A
MC132FD/A
MC133FD/A
MC134FD/A
Liechtenstein
Swisscom

MB489FD/A
MB496FD/A
MB500FD/A
MC131FD/A
MC132FD/A
MC133FD/A
MC134FD/A
Norway
NetcCom

MB489KN/A
MB496KN/A
MB500KN/A
MC131KN/A
MC132KN/A
MC133KN/A
MC134KN/A
Paraguay
CTI Movil

MB489LZ/A
MB496LZ/A
MB500LZ/A
MC131LZ/A
MC132LZ/A
MC133LZ/A
MC134LZ/A
Peru
Claro

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Peru
TM SAC

MB489LA/A
MB496LA/A
MB500LA/A
MC131LA/A
MC132LA/A
MC133LA/A
MC134LA/A
Poland
Orange

MB489PL/A
MB496PL/A
MB500PL/A
MC131PL/A
MC132PL/A
MC133PL/A
MC134PL/A
Poland
Era

MB489PL/A
MB496PL/A
MB500PL/A
MC131PL/A
MC132PL/A
MC133PL/A
MC134PL/A
Portugal
Vodafone
MB489PO/A
MB496PO/A
MB500PO/A
MC131PO/A
MC132PO/A
MC133PO/A
MC134PO/A
Romania
Orange

MB489RO/A
MB496RO/A
MB500RO/A
MC131RO/A
MC132RO/A
MC133RO/A
MC134RO/A
Spain
Movistar

MB757Y/A
MB759Y/A
MB760Y/A
MC131Y/A
MC132Y/A
MC133Y/A
MC134Y/A
Switzerland
Orange

MB489FD/A
MB496FD/A
MB500FD/A
MC131FD/A
MC132FD/A
MC133FD/A
MC134FD/A
Switzerland
Swisscom

MB489FD/A
MB496FD/A
MB500FD/A
MC131FD/A
MC132FD/A
MC133FD/A
MC134FD/A
Uruguay
CTI Movil

MB489LZ/A
MB496LZ/A
MB500LZ/A
MC131LZ/A
MC132LZ/A
MC133LZ/A
MC134LZ/A
Uruguay
Movistar

MB489LZ/A
MB496LZ/A
MB500LZ/A
MC131LZ/A
MC132LZ/A
MC133LZ/A
MC134LZ/A

Austria
T-Mobile

MB490DN/A
MB497DN/A
MB501DN/A
MC139DN/A
MC140DN/A
MC141DN/A
MC142DN/A
Canada
Rogers

MB629C/A
MB630C/A
MB631C/A
MB632C/A
MB633C/A
MB634C/A
MB635C/A
MB636C/A
MC143C/A
MC144C/A
MC145C/A
MC146C/A
MC147C/A
MC148C/A
MC149C/A
MC150C/A
Canada
Fido

MB629C/A
MB630C/A
MB631C/A
MB632C/A
MB633C/A
MB634C/A
MB635C/A
MB636C/A
MC143C/A
MC144C/A
MC145C/A
MC146C/A
MC147C/A
MC148C/A
MC149C/A
MC150C/A
Germany
T-Mobile

MB490DN/A
MB497DN/A
MB501DN/A
MC139DN/A
MC140DN/A
MC141DN/A
MC142DN/A
India
Vodafone

MB489HN/A
MB496HN/A
MB500HN/A
MC131HN/A
MC132HN/A
MC133HN/A
MC134HN/A
Ireland
O2

MB489B/A
MB496B/A
MB500B/A
MC131B/A
MC132B/A
MC133B/A
MC134B/A
Japan
SoftBank

MB489J/A
MB496J/A
MB500J/A
MC131J/A
MC132J/A
MC133J/A
MC134J/A
Mexico
Telcel

MB489E/A
MB496E/A
MB500E/A
MC131E/A
MC132E/A
MC133E/A
MC134E/A
Netherlands
T-Mobile

MB490DN/A
MB497DN/A
MB501DN/A
MC139DN/A
MC140DN/A
MC141DN/A
MC142DN/A
Philippines
Globe

MB489PP/A
MB496PP/A
MB500PP/A
MC131PP/A
MC132PP/A
MC133PP/A
MC134PP/A
Portgual
Optimus

MB489PO/A
MB496PO/A
MB500PO/A
MC131PO/A
MC132PO/A
MC133PO/A
MC134PO/A
Slovakia
T-Mobile

MB490SL/A
MB497SL/A
MB501SL/A
MC139SL/A
MC140SL/A
MC141SL/A
MC142SL/A
Sweden
Telia

MB489KS/A
MB496KS/A
MB500KS/A
MC131KS/A
MC132KS/A
MC133KS/A
UK
O2

MB489B/A
MB496B/A
MB500B/A
MC131B/A
MC132B/A
MC133B/A
MC134B/A
USA
AT&T

MB046LL/A
MB048LL/A
MB499LL/A
MB702LL/A
MB704LL/A
MB705LL/A
MB715LL/A
MB716LL/A
MB717LL/A
MB718LL/A
MB719LL/A
MC135LL/A
MC136LL/A
MC137LL/A
MC138LL/A
Egypt
Mobinil

MB489AB/A
MB496AB/A
MB500AB/A
MC131AB/A
MC132AB/A
MC133AB/A
Egypt
Vodafone

MB489AB/A
MB496AB/A
MB500AB/A
MC131AB/A
MC132AB/A
MC133AB/A
MC134AB/A
******
Orange

MB489AB/A
MB496AB/A
MB500AB/A
MC131AB/A
MC132AB/A
MC133AB/A
MC134AB/A
Turkey
Vodafone

MB489TU/A
MB496TU/A
MB500TU/A
MC131TU/A
MC132TU/A
MC133TU/A
MC134TU/A

Source: gsmfamily