Windows 7 Tip: 
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.
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2. Connect your iPhone 3GS to the Windows PC.
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3. Click ‘Restore’ while holding SHIFT key and select the Custom IPSW that you saved in your desktop.
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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.
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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, and yes don,t forget to Subscribe us feed Here and Follow us on twitter too.
would be great, if it would work, but it doesn’t.
The unlock does not work, because of the baseband change withe the new FW 3.1.2….
@Volker
No this will not upgrade your baseband.
I have a iphone 3gs with firmware 3.0, jailbreaked with ultrasnow and use a o2 simcard.
can i use this guide to update the firmware to 3.1.2 and use my simcard in future ?
must i use a activated custom firmware or an unactivated firmware ?
i have followed your guide, it runs perfectly
I´m so happy, u are great !!!
@Klaus
Welcome to the 3GS 3.1.2 World
Raj……. this jailbreak…will it work for 3g?
@justice
No, this one only for 3GS users
Will it unlock my 3gs already jailbroken with 3.1.2 but my baseband is 05.11.08? Please advise.
Well, i also have the problem that update the new iTunes and it is locked my cell phone since i don’t use AT&T. I followed your step, downloaded the file only; however, after i install the file that i have downloaded above, i cant continue sine the iTunes said that unknown error 1604
what is it and how can i solve it?
Raj. thank you for your work.
my iphone was 3.0 with o2-network lock, then there was an upgrade to 3.1…i had all acces to the phone, except for sim. now i have upgrade to 3.1.2 from itunes original and can do only Emergency calls. its baseband 05-11-07…will these steps works also on my iphone and solve the problem?
pls reply in normal language, i dont understand very much of iphones.
thank you.
i have 3Gs 3.1.2 and i done everything, but unlock didn`t work my Modem v.05.11.07 is that the reson for couldn`t unlock.
please any idea.
I have a question: i have follwed aour guide and everything works fine. But i cant sync apps which require fw 3.1 for example the game “canabalt” i have jb and appsync 3.1 installed.
Klaus
@Souf
Yes. Coz you are on v.05.11.07
RAJ well i highly appriciate your hardwork … I have a Question for you.
My 3gs was locked due to official update 3.1 .. its been 1 month my cell is locked … now if i restore with this 3.1.2 will my phone be some stable as in a ipod ? i mean i know till now no baseband unlock for 5.11.07 but … can i restore my locked iphone with this firmware in inorder to use wifi , cydia , games and songs ? inshort an ipod for the time being ??
waiting for you reply.
raj, quick question.
If I get a warranty replacement for my 3g with 3.1 firmware on it, can it be unlocked using this method?
@Ejaz
No Ejaz you can,t
Hi, I have iphone 3gs and am trying from a long to JB it, its done, Blackr!n and then Cydia, all ok but when I put my spanish sim, then its just says ” searching” and that never ends, It was JB before the 3.1.2 but now I am just lost,
plzzzzzzzz HELPPPPPPPPP
i get a unknown error 1604 . what can i do to make it wrok? pleas answer
hi today i update my iphone ( 32 GB S), via Itune, now my phone firmwire 3.1.2,when it is finished, i see my my has lock, can u tel me how i can unlock my, if anybody can help me pls pls pls pls pls Help me
I already done all these steps, however my phone keep searching the network (No Service)
Already swap the sim card, restarted d phone, on / off the network setting n etc.
Still No netwrok~
Pls help!!
If I haven’t jailbroken my new 3GS should I not try use this?
@ Raj
Hello, is it installing Cydia with this ipsw? I mean how can you Unlock if there is no Cydia program installed?
@Renas
Yes it was with Cydia.
After the installation you have to run Cydia to Unlock it
@Raj
Do you know anything about the error 1604? I got that error 3 times in row any ideas?
@Renas
Install the latest iTunses Version. Restart your PC and Iphone than do it. It works
I installed iTunes 9.0.1.8., plugged in the iPhone, did a backup, then did the Shift + Restore pointing the custom ipsw. I then performed the upgrade as instructed on a iPhone 3GS 3.01 firmware with baseband 4.26.08 (jailbroken) and it worked perfectly. I know have 3.12 firmware with baseband 4.26.08 (jailbroken) and unlocked with ultrasn0w. It worked perfectly.
i have a new iphone 3.1 basband 5,11 and can i jail break it in the windows . do i have to updat it or i will not unlock its new in the box came with 3.1
By mistakly update from 3.0 to 3.1 via itunes, now i m stuck with 3.1, can i upgrade to 3.1.2 will this will allow me to use other sim card.
thanks
mine is 3GS (3.1.2) with baseband 5.11.07. I tried the steps and got 1604 error. Any clue? Thanks
I installed iTunes 9.0.1.8., plugged in the iPhone, did a backup, then did the Shift + Restore pointing the custom ipsw. I then performed the upgrade as instructed on a 3.12 firmware with baseband 5.11.07 and unlocked with ultrasn0w. Its Not worked still searching and finally Say No Service, Please Help to activate my iphone 3gs to india sim cards, please help me
@Arun
This Will not work on 5.11.07 baseband. and already mention it does not work for those who have an iPhone 3GS with Firmware 3.1 out-of-the-box.
@geda
No You Can,t
@alex
It will not work on baseband 5.11.07
thanks for ur replay , how to change my iphone 3gs
baseband
iphone 3gs 3.1 succesfully jail bracked but not unlocked please help me
Thank you SOOO MUCH
WORKS LIKE A DREAM 
Well it sounds easy and it is easy, but after unlocking I can’t find any network :S
I have a 3G 3.0 firmware with baseband 4.26.08.
I want to go to 3.2.1 but keep baseband 4.26.08.
Do you have
iPhone1_2_3.1.2_7D11_Activated_Custom_Restore
as this post only has for 3GS and 2G.
Please can you direct me to a link to obtain this. or can you create for me.
I have a factory unlocked iphone 3gs model no mc 131x modem firmware 05.11.07. tried jailbreaking using blackra1n but errors were there and later came to know that blackra1n does not work for MC models. i am on firmware 3.1.2 updated after blackra1n issue. Now which custom firmware do i download and restore to and will it work…
Where on earth can we get the Jailbreak that works with 3G? I’m with Orange Cameroon I have done all these biut I still get ‘No Service’.
I Jailbroke my iphone 3gs @ 3.0 it worked fine including network;; i updated to 3.1 thru itunes ;;;; i m locked now ;;;can i try your guide;;;;;;Please help will there be an unlock for baseband 5.0…. in the future ??? it cost me 44000 inr;;;;
Hi how can i get this done for a 2g on windows
Can you please help
i know its the custom firmware, i just want to know, other firmwares have the silly pineapple at boot, does this one have it?
Hi i did this to my iPhone 3G it came with OS 3.0.1 out of the box i did the jailbreak to 3.1.2 baseband is 4.26.08 but when I installed ultrasn0w It didn’t worked for me it says searching for a long time and then just goes to No Service it seems like a straightforward and easy method I don’t know what went wrong any suggestions?
U R The 1!!!!!
Thanks alot man it Works!
i was using AT&T Unlocked 32 gb 3GS
with a 3.0 firmware & 4.26.08 modem,
i just followed what u explained and everthing is working fine.
I unlocked it with no problem and i can still use
my turkish simcard and my modem firmware is
still the same.
Thanks again
I have an iPhone 3GS that is already Factory Unlocked.
(I bought it from SingTel. The Singapore government’s rule that all iPhone sold in Singapore must be factory unlocked)
It is now in 3.0 firmware, If in the future I want to upgrade it to 3.1, will it affect the Factory Unlock?? since they said that the baseband will permanently changed. (because I’m using another simcard -not from singtel-)
Or the upgrade just will affect the iPhone that with Software Unlock (not Factory Unlock)
Thank you for your helpful information!
You guys gotta stop using rapidshare… its a piece of shit and now only premium members can download it.