However, I would like to share a
guide on how to jailbreak iphone 3Gs 3.1 firmware on Windows using Custom Firmware (iPhone2,1_3.1_7C144_Custom_Restore).

How to Jailbreak iPhone 3G Firmware 3.1

1. First Download the following links of custom iPhone 3.1 Firmware
2. Now join all the downloaded parts using HJSplit and you will get one archive, uncompress that archive and it contains IPSW file of firmware 3.1
   Custom iPhone 3GS 3.1 Firmware Part 1
   Custom iPhone 3GS 3.1 Firmware Part 2
   Custom iPhone 3GS 3.1 Firmware Part 3
   Custom iPhone 3GS 3.1 Firmware Part 4
3. Now Install (if you haven’t already) and open iTunes 9
4. Connect you iPhone to the PC using data cable.
5. Choose your iPhone from devices menu on left.
6. Now click “Resotre” while holding Shift key and select the custom IPSW file which you downloaded in step 1
7. Now Sit back and relax until the installation process complete.
8. After Jailbreaking your
   iPhone 3GS to 3.1 Firmware you can follow this guide to unlock you iPhone and use with any SIM/Carrier.

using latest Pwnage tool 3.1.3 which was just released by iPhone Dev Team.

Before you start with it here is what you’ll need in this guide.

1. iTunes 9
2. Pwnage Tool 3.1.3
3. Original iPhone 3GS OS 3.1 Firmware File

How to Jailbreak iPhone 3GS 3.1 Firmware:

1. Download and Install iTunes 9 from Apple site.
2. Make complete backup of your iPhone.
3. Download Original iPhone 3.1
   Firmware using the links provided in this post.
4. Download Pwnage Tool 3.1 and select
   iPhone 3GS from device list.
5. Now Pwnage tool will automatically detect original
   firmware file which you downloaded in Step 3, if it can’t then browse it manually.
6. Click Next and then Choose Yes and then on another dialogue box Choose no, if you aren’t using Contract iPhone. Choosing No will let you unlock your iPhone and use it with any SIM
7. Now Pwnage Tool 3.1 will start building custom IPSW file.
8. Once done, click Yes and then click Next.
9. Now Open iTunes 9 and choose your
   iPhone 3GS from the devices list on left side now press Alt/Option key and then click on Restore and browse the Custom made iPhone 3.1
   firmware now choose Open.
10. Now relax back until iTunes updates your iPhone to 3.1
    Firmware.

After completing the entire above steps your

iPhone 3GS on firmware 3.1 using this latest release. However Pwnage Tool 3.1.3 will only be able to jailbreak those

iPhone 3GS and iPod 2G who have already been jailbroken previously and will not work for those one with a 3.1 firmware just unboxed.

They have also provided a list of important points which you should consider to read before using Pwnage

1. If you are using a 3G iPhone with ultrasn0w and rely on ultrasn0w to obtain cellular service, then you should only upgrade to 3.1 with a PwnageTool created .ipsw.
2. PwnageTool will work for the
   iPhone 3GS assuming you have already Pwned it at 3.0 or 3.0.1
3. PwnageTool will work for the iPod touch 2G assuming you have already Pwned it at 3.0 or 3.0.1

Step by Step guide on how to Jailbreak

Download Pwnage Tool 3.1.3

http://apfelportal.de/host/images/PwnageTool__3.1.3.dmg
http://imodzone.net/pwn/PwnageTool__3.1.3.dmg
http://nevyn.nu/files/PwnageTool__3.1.3.dmg
http://zcr.me/f/PwnageTool__3.1.3.dmg
http://dl.opt-6.com/public/PwnageTool__3.1.3.dmg
http://mirrors.c2wifi.org/iPhone/PwnageTool__3.1.3.dmg
http://www.spiralnine.com/bin/PwnageTool__3.1.3.dmg
http://www.hackthatphone.net/PwnageTool__3.1.3.dmg
http://downloads2.touch-mania.com/PwnageTool__3.1.3.dmg
http://coldgame.de/PwnageTool__3.1.3.dmg
http://files.mackgoodstein.com/PwnageTool__3.1.3.dmg
http://dev.poorlad.com/PwnageTool__3.1.3.dmg

So, here is a guide on How to unlock iPhone 3G 3.1 Firmware using Ultrasn0w.

Before attempting to unlock your iPhone 3G make sure you have update and jailbroken your iPhone with 3.1 Firmware and make sure you have install Cydia at the time of jailbreaking.

1. Once you have jaikbroken your iPhone 3G open Cydia on your iPhone.
2. Now select on Manage tab at bottom and choose Sources.
3. Now you will have to add repository, to do this tap on edit and then Add button now type following repository URL

   http://repo666.ultrasn0w.com/

4. After the source has been added tap on “Return to Cydia”.
5. Now go to Search menu from bottom menu, type “ultrasn0w” and press search.
6. Now tap on the ultrasn0w and choose Install from the top right menu.
7. After installation complete restart your iPhone and insert your SIM.
8. Here you go, now your iPhone 3G is completely unlocked and ready to use with any carrier.

This custom made 3.1 firmware comes with Apple logo and Cydia. So now follow the step below to jailbreak.

How to Jailbreak iPhone 3G Firmware 3.1

1. First Download the following links of
   custom iPhone 3.1
   Firmware
2. Now join all the downloaded parts using HJSplit and you will get one archive, uncompress that archive and it contains IPSW file of
   firmware 3.1 Custom iPhone 3G 3.1 Firmware Part 1
   Custom iPhone 3G 3.1 Firmware Part 2
   Custom iPhone 3G 3.1 Firmware Part 3
3. Now Install (if you haven’t already) and open
   iTunes 9
4. Connect you iPhone to the PC using data cable.
5. Choose your iPhone from devices menu on left.
6. Now click “Resotre” while holding Shift key and select the custom IPSW file which you downloaded in step 1
7. Now Sit back and relax until the installation process complete.
8. After Jailbreaking your iPhone 3G to 3.1 Firmware you can follow this guide to unlock you iPhone and use with any SIM/Carrier.

How to Jailbreak iPhone 2G Firmware 3.1

1. First Download the following links of
   custom iPhone 3.1
   Firmware
2. Now join all the downloaded parts using HJSplit and you will get one archive, uncompress that archive and it contains IPSW file of
   firmware 3.1 Custom iPhone 2G 3.1 Firmware Part 1
   Custom iPhone 2G 3.1 Firmware Part 2
   Custom iPhone 2G 3.1 Firmware Part 3
3. Now Install (if you haven’t already) and open
   iTunes 9
4. Connect you iPhone to the PC using
   data cable.
5. Choose your iPhone from devices menu on left.
6. Now click “Resotre” while holding Shift key and select the
   custom IPSW file which you downloaded in step 1
7. Now Sit back and relax until the installation process complete.

No ultrasn0w or Bootloaders needed for iPhone 2G.

Link Credits [Sizlopedia]

However, Pwnage tool 3.1 works on Mac OS X, so windows users will have to wait until they got updated version of redsn0w released.

iPhone Dev team has also instructed that this release of Pwnage tool 3.1 will only jailbreak iPeone 2G, iPhone 3G and iPod Touch 1G and furthermore you can also unlock your iPhone 2G and 3G using Ultrasn0w which lets you use your iPhone on any carrier.

Before you start using Pwnage tool 3.1 have a look on some important points:

1. If you are using a 3G iPhone with ultrasn0w and rely on ultrasn0w to obtain cellular service, then you should only upgrade to 3.1 with a PwnageTool created .ipsw.
2. If you have an iPhone 1st Gen then 3.1 unlock works with this PwnageTool release.
3. This version of PwnageTool wll NOT work for the iPhone 3GS aswell as iPod Touch 2G and 3G
4. PwnageTool will work for iPhone (1st Generation), iPod touch (1st Generation) and the iPhone 3G.

Download Pwnage Tool 3.1

http://foskarulla.com/PwnageTool_3.1.dmg
http://downloads2.touch-mania.com/PwnageTool_3.1.dmg
http://fosk.it/PwnageTool_3.1.dmg
http://www.peltner-kfz.de/PwnageTool_3.1.dmg
http://bentkowski.com.pl/PwnageTool_3.1.dmg
http://www.iemanduitnederland.nl/PwnageTool_3.1.dmg
http://miphone.ca/iphone-dev/PwnageTool_3.1.dmg
http://dehek.us/PwnageTool_3.1.dmg

Boasting of an optical zoom of up to 3 times, this 12MP stunner is wrapped with the latest in camera technology. It supposedly also sports the world’s most advanced 3.3” WVGA AMOLED full touch screen at 800 x 480 pixels. It is further known to be bundled with an array of enhanced functions that should allow users to effortlessly snap, browse and share their images even while on the move.

“Samsung has led the camera phone market introducing the very many first of its kind camera phone – the first 5-megapixel (SCH-V7800, June 2005), the first 7-megapixel with an optical zoom(SCH-V770, July 2005), the first 10-megapxel (SCH-B600, October 2006), and recently, the first 12-megapixel camera phone for global market(Samsung Pixon12, June 2009). The Samsung AMOLED 12M is a living proof of our continuous commitment to introduce the most up-to-date technology to enrich users’ mobile experience.” mentioned Executive Vice President JK Shin, Head of Mobile Communication Division in Samsung Electronics. With a Dedicated Camera Power Key, users can take pictures quickly and easily which also gives the phone a more realistic digital camera-alike look and grip feeling. Incorporated with fast image saving for next shot, users can move to the next shot within around 2 seconds. At 30fps, the handset also offers high quality video recording in 1280 x 720 resolution. Claiming to deliver an enhanced photo quality, the phone additionally adopts innovative camera features like Touch Auto-Focus (AF) tracking and Smart Auto feature. Equipped with an advanced lens and Xenon flash, users can now effortlessly display their photos to loved ones

Operating on the WCDMA (2100)/ GSM(900) / DCS(1800 ) / PCS(1900) networks, the phone supports MP3, AAC, AAC+, AAC+e, WMA audio files and .MPEG4, H.263, H.264, DivX, XviD video formats. Equipped with the Terrestrial DMB (Mobile TV), the phone is also enabled for Bluetooth 2.0, USB 2.0 HS (micro USB) connectivity. Boasting of 4GB internal memory, users can also choose to expand its external memory up to 32GB via Micro SD. The handset is around 115.8 x 56.9 x 16.3mm in dimensions.

The phone is going to be sold in the Korean market from early October, 2009. As of now there is no word on its price.