How to Unlock iPhone 3G OS 3.0 with UltraSn0w
In this iPhone Guide, you will learn how to Unlock iPhone 3G on OS 3.0 with UltraSn0w. This Guide is for iPhone 3G users ONLY.
iPhone 2G users, please navigate to:
In order to follow this iPhone Guide,you must be on Baseband 04.26.08 which means you need to Update your iPhone firmware to iPhone OS 3.0 and then Jailbreak iPhone 3G.
Jailbreaking iPhone 3G OS 3.0 guides can be found here:
When you have updated to iPhone OS 3.0 and have jailbroken iPhone 3G using one of the above guides, then you can use this guide to unlock iPhone 3G OS 3.0 using UltraSn0w.
***If you are on T-Mobile remember to turn off 3G before starting…
How to Unlock iPhone 3G OS 3.0 with UltraSn0w
- Launch the Cydia from your iPhone Springboard.

- Go to Manage Tab at the Bottom.
- Press the Big Sources Button.


- Press the Edit button at the Top Right of the Screen.
- Then press the Add button on the Top left of the Screen.


- Input the following URL: http://repo666.ultrasn0w.com/ and hit Add Source button.
*** That last “o” is actually the number zero “0”! If you use the letter “o” you’ll get an error.
- When Cydia is done with adding Source, Hit the big Return to Cydia button.


- Press the Done button at the Top Right.
- Then Press repo666.ultrasn0w.com under the User Added Sources.

- Select UltrSn0w from the list of packages.
- Hit Install button at the Top Right corner.


- Then Press the Confirm button at the Top Right.
- When the Installation is completed successfully, press Return to Cydia button.


- Press the Home button to go back to SpringBoard. Then Turn your iPhone OFF by holding down the power button for 3 seconds and then dragging the Power slider that appears to the right. Now Turn the iPhone 3G back ON.
Enjoy the SIM of any carrier on your just Unlocked iPhone 3G on OS 3.0. Don’t forget to leave your feedback under comment section.
Tags: iPhone, iPhone Guides, iPhone Tutorials, Ultrasn0w, Unlock iPhone 3G, Unlock iPhone OS 3.0
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hey there i jailbreak my iphone3g running 3.1 but i cant unlock it with ultrasn0w after trying all what they said on the web site because the phone is no accepting the sim card that i was using before the jailbreak and even any other sim card am stock here please does repo666.ultrasn0w.com unlock iphone3g os 3.1 and can i do it.
@ ski 13
UltraSn0w even unlocks OS 3.1.2 but only if your MOdem firmwares is 04.26 or lower. It can’t unlock 05.11
if I would to restore a clean 3.1 or 3.0.1 fireware will it still keep the 5.11 modern or will it down grade it. If at all possible I have a 3.1.2 fireware and a 5.11 modern how can I get it to work with ultrasnow.
Thanks,
Sorry you can’t downgrade baseband by downgrading firmware..
If you have Cydia on ur iPhone try 3G Fuzzyband from cydia it will tell you if your baseband is downgradable.
Hi guys i´ve just finished jailbreaking and unlocking and it seems it works
. You are awesome thx so much !
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Hello, I’ve just followed the whole process on my iphone 3G and after everything, it’s not recognising any sim card. Can you please help?
Your OS? Baseband?
nice … it works perfectly on my 4.28.06 … but the unlocking part was quick and dirty!
Hi, I followed the instructions above and just installed Ultrasnow from Cydia on the 3.1.2(7d11) firmware. My modem firmware is 2.28.00. I’ve just restarted the phone, but it says “no service”. It’s unable to recognize my sim card. I followed the directions with the 3g off. Can you help me?
I just saw a message in Cydia that says,”If you upgrade to 3.1.2 without using Pwnagetool to do so you will not be able to unlock your phone at this time, and maybe forever after.”
I did the custom restore method of using the custom .ipsw files in itunes 9. Is that the problem?
He mentioned that if you do WITHOUT using PwnageTool..
Custom Firmwares are created with PwnageTool..
because it’s for MAC only so I have created custom firmwares for Windows users:
http://www.iphoneheat.com/2009/10/download-iphone-os-3-1-2-custom-firmware-ipsw-files-for-iphone-3gs-3g-2g
I’m not sure what you mean exactly sorry. I dled the custom firmwares provided on the site. After the jailbreak, I went on to unlock the phone w/ Ultrasnow, but it doesn’t recognize my T mobile service.
you can use Fuzzyband Downgrader to upgrade your baseband to 4.26 then reinstall Ultrasnow. it should work like magic.
try resetting carrier/network setting..
turn OFF/ON airplane mode..
or
reinstall UltraSn0w
I’ve tried reinstalling Ultrasnow 3 times on separate occasions. Nothing. The airplane mode and resetting carrier settings doesn’t work neither.
On the settings menu, the carrier option disappears, going in and out. I don’t know if that helps with much because either way, it doesn’t detect a service.
Did you disabled 3G before installing UNltraSn0w?
so it now and reinstall..
and also try turning OFF and ON the AirPlane Mode.
I justed broke my iphone 3g out of ATT Correctional Facilities and im feeling like a new man, the unlocking was seemless. BYE BYE ATT