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:
- Jailbreak iPhone 3GS iOS 4 using sn0wbreeze1.6
- Jailbreak iOS 4 iPhone 3GS with Pwnagetool 4.0/4.01
- Jailbreak iPod Touch 2G iOS 4 using redsn0w 0.9.5
- Download Custom iOS 4 Firmware iPhone 3GS 3G


{ 27 comments… read them below or add one }
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?
No, iOS 4 must be jailbroken and wait till jailbreak tools are updated. That will be soon
im a first timer and im trying to unlock my 3gs by myself so i need help please
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?
Don’t upgrade until some stable jailbreaking tool emerge.
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!
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?
First Jailbreak it with guide here http://www.crispytech.com/2010/06/08/ios-4-0-jailbreak-iphone-3g-redsn0w-0-9-5/
Hi there,
Is there any possibility for me to jb my iphone 3gs on iOS 4 gm? Thanks anyway
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?
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.
AHHHHH!!!!!
) 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”
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
help please!!!
Check your imei if it is registered or not
yepiiiiii,, i unlocked my 3.1.3 bb 5.12.01
how???? share it! lol
Thank you so much, I have been unlocked my iphone 3g with this tutorial. Very clean and neat procedure to unlock
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!!
how do u do it i been trying but i cant seem to do it what program you using ?
Hi i have iphone 3gs with ios4 already installed in it how can i unlock this phone plz help
GO to Jailbreakme.com
they released a jailbreak yesterday and you can unlock from there
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
Works like a charm! Jailbroken with jailbreakme 2.0 and unlocked with ultrasn0w 0.93
Thanks all for the fabulous work!
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
Wow. This works perfectly. Thanks a lot for sharing.
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.
Damnnnnn.. Its workinggg… THXXXX. Yudi FROM INDONESIA
hi i have on iphone 4 bb 03.10.01 version 4.2.1 how i unlocked plsssssss help