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Blacksn0w unlocks iPhone OS 3.1.2 and baseband 05.11.07

by Josh Carr Nov 3rd 2009 at 3:00PM

For the last several months, anyone who had updated to iPhone OS 3.1 or greater without following a pre-update procedure lost the unlock on their iPhones due to new software in the modem firmware or the baseband. Using the at+xemn crash as an injection point, iPhone hacker Geohot (of the original hardware unlock) was able to unlock the latest firmware on any iPhone.

What does this mean? The iPhone can be unlocked for any GSM carrier, allowing you to use it on more than your country's authorized carrier or other carriers as you're traveling abroad.

Geohot suggests that you update to a fresh copy of iPhone OS 3.1.2 directly from Apple before performing his unlock. He has all the instructions available on his site.

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For the last several months, anyone who had updated to iPhone OS 3.1 or greater without following a pre-update procedure lost the unlock...
 

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Sladey

Hi Guys,

Just tried to unlock my 3g iphone Firmware 05.11.07 using blackra1n, it went through the whole process as described but didn't achieve anything. No Unlock no Blackra1n app. anyone got any ideas?

Cheers

Sladey

January 14 2010 at 5:58 PM Report abuse rate up rate down Reply
muli

hi
i installed an app and later switched my phone.now it is stuck on the app logo.when i try to restore itunes wants to restore and update.what do i do help cuz i don't want to lock the phone.

January 10 2010 at 5:49 PM Report abuse rate up rate down Reply
King

Man got screwed here , i have iphone 2g with 2.2.1 software , jus ran blackrain with itunes 9 and iphone 3.1.2 , nothin is working , i am being asked to activate my iphone
, dunno what to do next ??
Help needed.

December 26 2009 at 2:57 PM Report abuse rate up rate down Reply
storm

I already did this twice & don't know way out, as soon as i reboot my 3gs after jail break and unlock it goes in recovery mode and shows Itune logo & usb and then i have to restore it .. plz help

December 22 2009 at 12:10 AM Report abuse rate up rate down Reply
1 reply to storm's comment
Josh Carr

As mentioned in the reply above, it appears to be an issue with the 3GS called tethered unlock. Basically, you have to run Blackra1n on your device any time it reboots. Not ideal, but it's currently the only solution.

Hopefully something better will come out soon. Until then, Blackra1n will be your best friend. :(

December 22 2009 at 1:21 AM Report abuse rate up rate down Reply
Rahul

I have iPhone 3G firmware 3.1.2 basband 5.11.07 ,
My problem is ,after restoring with 3.1.2 the iPhone still keep on showing the pop up "Restore needed" and blank IMEI ,blank ICCID ,blutooth address is 00.00.00..
and modem firmware also blank .
there "No Wifi" as well
Please help me, I just used my iPhone for 2 days ,,,and ever since ,I am just trying to make it work..
Please - please help me

December 19 2009 at 5:11 PM Report abuse rate up rate down Reply
1 reply to Rahul's comment
Josh Carr

There has been reports of this being a "tethered unlock." We didn't know the validity of these claims until recently.

Basically, it means that you have to re-run "Blackra1n" any time you reboot the iPhone.

It appears to only effect those who have unlocked the iPhone 3GS. You should be okay if you just let Blackra1n do its thing. It's annoying but at least it gives you your phone back.

December 22 2009 at 1:20 AM Report abuse rate up rate down Reply
joesixgig

Ran this on a 3G. Worked, apart from having sn0w get stuck on the 'log file' screen. After a forced restart the phone WAS carrier unlocked though. Since then I've gotten a case of cold feed. Who is to say that some of these nice Cydia apps don't stream all my locally saved passwords (online banking..) to a remote server, or all your contacts for nice spam lists, or your apple password?

Question: if you only carrier unlock, is there any clear knowledge on what new vulnerabilities you are open to after this process? Can people extract the source code and see if there are any backdoors etc? Maybe I'm not cut out for this unlocking biz after all! -Joe

November 05 2009 at 2:53 PM Report abuse rate up rate down Reply
Jason

I have my iphone unlocked to 3.0 on tmobile and am gonna update it to 3.1.2 do i have to have a wifi connection on my iphone for it to work or not.
thanks if any one knows

November 04 2009 at 5:52 PM Report abuse rate up rate down Reply
Crease

I've unlocked my phone, but now my neither of my e-mail accounts will connect. they seem to be losing their password. Anyone know of a fix?

November 04 2009 at 3:06 PM Report abuse rate up rate down Reply
Mark Abercrombie

Thanks Guys. Resetting the network settings did the trick. Now unlocked and loving it!

November 04 2009 at 2:34 PM Report abuse rate up rate down Reply
marc

Thanks for explaining...

November 03 2009 at 10:52 PM Report abuse rate up rate down Reply
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