Unlock iPhone 3GS 2G Firmware 3.1.2 on Windows, ultra snow

Again so Quickly Dev Team released the new Pwnage tool 3.1.4 to Jailbreak iphone 3GS 3.1.2 on MAC. But again this time it was not available for the Windows. So again we made a iPhone 3GS 3.1.2 Activated Custom Firmware to Jailbreak and Unlock iPhone 3GS 3.1.2. Yes i tried it this on my iPhone 3GS on Windows and it was working so smoothly. But only users with a previously Jailbroken iPhone 3GS should try this tutorial and yes it does not work for those who have an iPhone 3GS with Firmware 3.1 out-of-the-box. So here is the guide:-
If your on baseband 05.11.07 thans read this Unlock iPhone 3.1.2 baseband 05.11.07 with blacksn0w
Download all these 3 Rapidshare Links and Join with them HJsplit and Unzip it on your desktop.

Links for iPhone 2G
iPhone2G-Custom312-Technobuzz.zip.001
iPhone2G-Custom312-Technobuzz.zip.002
iPhone2G-Custom312-Technobuzz.zip.003
Links for iPhone 3GS
iPhone2_1_3.1.2_7D11_Activated_Custom_Restore_Technobuzz_net.ipsw.001
iPhone2_1_3.1.2_7D11_Activated_Custom_Restore_Technobuzz_net.ipsw.002
iPhone2_1_3.1.2_7D11_Activated_Custom_Restore_Technobuzz_net.ipsw.003
After Joining them with HJsplit and savie it on the Desktop do these steps.
1. Download and intsall iTunes 9, and then run it.
.
2. Connect your iPhone 3GS to the Windows PC.
.
3. Click ‘Restore’ while holding SHIFT key and select the Custom IPSW that you saved in your desktop.
.
4. Now sit back and enjoy as iTunes does the rest for you. Once everything is processed and OS boots up, install Ultrasnow, See below how to do that.
.
5. Start “Cydia” on your iPhone and click “Manage” tab on the bottom than “Sources” as seen in the screenshot below:

6. Click “Edit” and then on “Add”. Now enter a url source
as seen in the screenshot below. Type “http://repo666.ultrasn0w.com” and touch on “Add Source”.

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

8. After installation is completed. Search for “ultrasn0w” in Cydia and install it.

Thats it! now your
iPhone 3GS 3.1.2  is Jailbreak and Unlock too. Enjoy it