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Unlock iPhone 3GS 3G iOS 4 with ultrasn0w 4.0/0.93

by EngineerHead on June 22, 2010

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So, you are enjoying the new iOS 4 and also expecting to get hands on on dazzling iPhone 4. They both make a handsome combination of hardware and software. There may be one thing which you are missing is the freedom to use iPhone any carrier other than AT&T. These carriers may be Tmobile or any other iPhone compatible network in the world.

Your wish comes true as iPhone Dev Team have released ultrasn0w to unlock iOS 4 on iPhone 3GS 3G. ultrasn0w 0.93 uses the same exploit found by Sherif Hashim to unlock iPhone 3.1.3 [05.12.01] which remains vulnerable in 05.13.04 baseband for iOS 4.

You can unlock iOS 4 on iPhone 3GS 3G if you abide by the tutorial.

Function 1: Your iPhone 3GS 3G  should be running on jailbroken iOS 4. If this is not the case, you can jailbreak it using redsn0w 0.9.5.

Function 2: Run Cydia on jailbroken iPhone and then navigate to “Manage” tab at bottom.

Function 3: Touch “Edit” and then “Add”. You will be asked to enter a URL for repository source. Enter http://repo666.ultrasn0w.com and finally “Add The Source”. Leave the rest for Cydia as it will update the sources.

Function 4: Now search “ultrasn0w” in Cydia and install the application. The latest version of ultrasn0w would be 0.93. ultrasn0w 0.93 will unlock iOS 4 on iPhone 3GS 3G.

Function 5: Restart iPhone 3GS 3G  and you can use iPhone with any carrier.

Jailbreak Guides:

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{ 27 comments… read them below or add one }

alina June 22, 2010 at 03:31

I upgraded to ios4 through itunes forgetting that i’m going to switch to any other carrier than at&t…is there any way i can carrier unlock my 3gs if i’ve the ios4 installed legitly and not a JB one?

Reply

EngineerHead June 22, 2010 at 03:46

No, iOS 4 must be jailbroken and wait till jailbreak tools are updated. That will be soon :)

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cedric June 22, 2010 at 05:34

im a first timer and im trying to unlock my 3gs by myself so i need help please

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Giuse101 June 22, 2010 at 06:01

Hi, I have a 3G Iphone with 3.1.3 and baseband 05.11.07

I am wondering if I update to IOS 4 via Itunes will the baseband change? And if so, is there any way to update while preventing the baseband update?

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EngineerHead June 22, 2010 at 10:41

Don’t upgrade until some stable jailbreaking tool emerge.

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Samantha June 22, 2010 at 14:15

Hey,

I have an iPhone 3GS with version 3.1.2 & 04.26.08 firmware.

I want to upgrade my version to the new iOS 4 update, however I know my phone is locked to a different network.

How do I update my 3GS to iOS 4 and unlock my phone so my sim card will work?

Thanks! :)

Reply

CXON June 22, 2010 at 21:08

Ultrasn0w 0.93 update for iphone 3g giving me an error saying it will only work for 3.0 OS. My unlocked iphone got updated last night, how do I unlock again after 4.0 update?

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EngineerHead June 22, 2010 at 21:35
J^o4N June 23, 2010 at 06:03

Hi there,
Is there any possibility for me to jb my iphone 3gs on iOS 4 gm? Thanks anyway

Reply

rana June 23, 2010 at 22:00

I upgraded to 3.1.3through itunes forgetting that i’m going to switch to any other carrier than at&t…is there any way i can carrier unlock my 3gs if i’ve the 3.1.3 installed legitly and not a JB one?

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EmilyB June 24, 2010 at 19:03

In the older versions you used to be able to change the network settings, to make sure we could access both the edge and the MMS etc. But the capability to do that seems to be gone with the new iOS. Can you tell me if I’m just missing it?

I successfully jailbroke and unlocked a 3G to iOS and have it running with TMobile. It gets calls and texts and has the little “e” showing, but doesn’t connect when I open browser windows etc.

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SidneyC June 27, 2010 at 20:41

AHHHHH!!!!!
frig i updated it to 4.0 using the pwnage tool and i have the cydia on my desktop (or whatever you call it on an iphone :P ) and i have done everything that ive seen on this and other websites but when i put in the new sim card the only thing im getting is “No Service”
help please!!!

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Burak July 23, 2010 at 23:31

Check your imei if it is registered or not

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raunyss June 28, 2010 at 05:08

yepiiiiii,, i unlocked my 3.1.3 bb 5.12.01

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taks July 26, 2010 at 00:03

how???? share it! lol

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Khadeer July 7, 2010 at 14:55

Thank you so much, I have been unlocked my iphone 3g with this tutorial. Very clean and neat procedure to unlock :)

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Blkstang July 11, 2010 at 07:33

Awesome i got my 3gs on tmobile updated to 4.0 , jailbroke and unlocked! Just got done restoring all my back up stuff and its flawless once again. Thanks!!

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kumar July 24, 2010 at 07:48

how do u do it i been trying but i cant seem to do it what program you using ?

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Worried July 31, 2010 at 07:02

Hi i have iphone 3gs with ios4 already installed in it how can i unlock this phone plz help

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Darren August 2, 2010 at 14:21

GO to Jailbreakme.com
they released a jailbreak yesterday and you can unlock from there

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absanche August 3, 2010 at 00:26

Thank you so much for your help. I have unlocked my iphone 3gs on 4.0 and works great. Currently using on tmobile and internet works great

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Frank August 5, 2010 at 19:35

Works like a charm! Jailbroken with jailbreakme 2.0 and unlocked with ultrasn0w 0.93

Thanks all for the fabulous work!

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armageddon August 19, 2010 at 15:28

i have an iphone 3gs 3.1.3 (7E18) Modem Firmware 05-12-01 i downloaded the IPSW 4.0 8A293 and redsnow 0.9.5b5-5! and when i try to use it and error will appear unable to recognize specified IPSW how can i repair this problem and the ersion Of IPSW 4.0.1 8A306 too can someone help plz

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Balaji October 5, 2010 at 08:50

Wow. This works perfectly. Thanks a lot for sharing.

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Anggito December 9, 2010 at 11:03

why my ultrasn0w is 1.2 instead of 0.93?and my carrier still in "no service". please help me. i need to make a call from my cell.

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yuuu December 29, 2010 at 17:54

Damnnnnn.. Its workinggg… THXXXX. Yudi FROM INDONESIA

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martin March 13, 2011 at 09:17

hi i have on iphone 4 bb 03.10.01 version 4.2.1 how i unlocked plsssssss help

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