Unlock iPhone 3.1.3 Baseband 05.11.07 with BlackSn0w

Unlock iPhone 3.1.3 Baseband 05.11.07 with BlackSn0w

If you’ve updated your iPhone to OS 3.1.3 using custom firmware created with PwnageTool or Sn0wbreeze, you would probably know that even after preserving Baseband at 05.11.07 it’s not unlockable with BlackSn0w. BlackSn0w which is meant to unlock iPhone Baseband 05.11.07 (true for OS 3.1.2) but it cannot unlock iPhone 3GS and 3G on baseband 05.11.07 of when you’re running iPhone OS 3.1.3.

Update: UltraSn0w 0.93 is Out Now! It can unlock all basebands for iPhone 3GS and 3G. (Check the Updates at the bottom)

BlackSn0w is unable to unlock baseband 05.11.07 on firmware 3.1.3 because it locates a function to patch by searching the binary for reference to string “SIM is not supported” but in iPhone OS 3.1.3, the same function now uses the string “Verified”. Since the location to patch is determined by instruction search&replace, the patch itself still works in 3.1.3 after changing the string and its length in Blacksn0w binary.

To unlock iPhone 3GS and 3G running iPhone OS 3.1.3 Baseband 05.11.07 with BlackSn0w, simply follow the step by step instructions listed below.

Disclaimer: This guide is for educational and testing purposes only. Use it at your own risk.

This patch is now available in Cydia as BlackSn0w RC2 to unlock iPhone 3.1.3 Baseband 05.11.07:
Unlock iPhone 3.1.3 Baseband 05.11.07

Unlock iPhone 3.1.3 Baseband 05.11.07 with BlackSn0w


Download BlackSn0w.deb: blacksn0w.deb
extract it using 7-zip (Download 7-zip).


Install OpenSSH on your iPhone from Cydia. Then reboot your iPhone.


Connect your iPhone to your computer and close the iTunes.


Windows Users:

Download WinSCP and install it. Run the WinSCP and provide the following details:

  • Hostname: IP address of your iPhone. (Settings >> WiFi >> Tap the Arrow next to selected Network)
  • User name: root
  • Password: input your SSH password here. Default password is alpine
  • Protocol: SCP

Detailed SSH guide can be found here.

Mac Users:

Download Cyberduck for Mac and install. Run the Cyberduck and provide the following details:

Server: IP address of your iPhone. (Settings >> WiFi >> Tap the Arrow next to selected Network)
Username: root
Password: input your SSH password here. Default password is alpine
Protocol: SFTP


Copy the System\Library\LaunchDaemons\com.apple.CommCenter.plist from blacksn0w.deb to /tmp/ directory on the phone, you’ve SSH’d into.


Download the patched blacksn0w.dylib (Download Link 1 | Link 2)

Copy it to /usr/lib/ directory on the phone.


Install the MobileTerminal from Cydia. Open the Terminal app and  run the following commands to login as root.

  • su root
  • alpine

Once you have logged in, enter the following command (yes it’s a single lengthy command)

launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist ; launchctl load /tmp/com.apple.CommCenter.plist ; launchctl start com.apple.CommCenter

Check if you get the Signals with unofficial Carrier SIM.

In case the test load fails, your iPhone will freeze. Wait 20 seconds and reboot it using (Power+Home) buttons combination.


if test load is successful, copy the com.apple.CommCenter.plist file from /tmp/ directory on the iPhone to /System/Library/LaunchDaemons/.

Reboot your iPhone. That’s it.

If you’re looking for iPhone jailbreak, we have already shared tons of guide on jailbreaking iPhone 3GS, 3G, 2G running iPhone OS 3.1.3 using RedSn0w, Sn0wbreeze and PwnageTool. You can jailbreak iPod Touch using our guides on RedSn0w 0.9.4, Sn0wbreeze and PwnageTool 3.1.5.

You can follow us to Twitter, Join our Facebook Fan Page, and also Subscribed to RSS Feed to receive latest updates on iPhone, iPod Touch and iPad.

via [RedmondPie][msftguy]

Jailbreak iOS 4.0

Unlock iOS 4.0

Update 1: Jailbreak iOS 4 with PwnageTool

Update 2: Jailbreak iPhone 3GS iOS 4 with PwnageTool

Update 3: Jailbreak iPhone 3G iOS 4 with PwnageTool

Update 4: UltraSn0w 0.93: Unlock iPhone 3GS, 3G (All Baseband)

Update 5: Unlock iPhone 3G iOS 4 with UltraSn0w 0.93

Update 6: Unlock iPhone Baseband 05.13.04 with UltraSn0w 0.93

Update 7: Unlock iPhone Baseband 05.12.01 with UltraSn0w

Update 8:

UltraSn0w 1.0-1 is OUT now.
How to: Unlock iPhone 4 iOs 4.0.1 with UltraSn0w 1.0-1

60 comments… add one
xuanquangpham March 21, 2010, 3:29 am

Thanks!!! It works greatly!!
Keep doing the good stuff…

CGA March 21, 2010, 9:33 am

it worked flawlessly! thank you so much! in case u guys are wondering my iphone is:
bootloader 6.02
firmware 3.1.3
baseband 05.11.07

jhon July 27, 2010, 8:06 am

I got the same configuration as you how can you unlock the iphone 3G

Ahmed el mejbri March 21, 2010, 11:18 am

Hey. Good day . I upgraded my iPhone 3gs 16g to 3.1.3 as you toled me in facebook after i got stuck in 3.1.2 in recovrymode since two weeks ago but now i use my iphone perfectly but without Sim card options i only use the WiFi and the Apple Apps aplications I have no Cydia I have no Installer so how can
I install Open SSH & Mobile Terminal. 🙁 im so sad because My iPhone 3gs stuck in the 2nd day so I didnt used it as phone yet.:(

brzoza March 21, 2010, 10:44 pm

it really works :DDDD Thx!

Cristian Garcia March 21, 2010, 11:00 pm

ooohh!!! man this workks!!! Thank you so much…

vesh March 22, 2010, 4:47 am

do you have any idea how to get rid of emergency slide because i am stuck in the emergency slide (in home screen usb connected with itunes and there is lock sign above it) it happens after i restore my iphone with itunes. my iphone is 3gs with 3.1.3(7E18) with baseband 05.12.01.

iPhoneHeat March 22, 2010, 3:59 pm

Use f0recast to knoiw your device and the jailbreak tool.. and then use that tool to jailbreak it

Rohit March 22, 2010, 9:47 am

I tried the following steps and compleetd sucessfully without any freeze , but in my Iphone 3G there is no change and it still remains locked . BTW post says baseband 05.11.07 , does 3.1.3 have baseband 05.11.07 ? . Mine is 3.1.3 and baseband 05.12.01

iPhoneHeat March 22, 2010, 4:02 pm

baseband remains preserved if you update to 3.1.3 using a custom firmware.. that’s the best way to go for latest firmware if you depend on unlock..
now that you update directly using official firmware, your baseband is also updated to 05.12.01 which is NOT unlockable ATM. Sorry..

CGA March 22, 2010, 10:03 am


you have to (h)activate your iphone first which ever method you use is up to you

vesh March 23, 2010, 8:20 am

can you tell me how can i hactivate my iphone in order to fix my emergency slide.

amir.f March 22, 2010, 5:40 pm

Hi guys!
Nice work U doing here. Is there now any JB for Iphone 3GS 3.1.3 out of box MC model with 05.12.01??? would you pls help me?

iPhoneHeat March 22, 2010, 6:49 pm

sorry no solution atm

bibhukesh March 24, 2010, 10:52 am

sir, my phone cant get signal, i want to fix manually plz tell me how to put the above said single lengthy command on mobile terminal

smith's report March 27, 2010, 9:57 am

Major Problem.

Before reading this post I followed steps on iclarified to JB 3.13. I did so. Everything is working great until I follow the unlock steps on another site.

it says go to Cydia and add the source for Blacksn0w. Then install blacksn0w and it will be unlocked.

Now my phone is attempting to load but keeps rebooting after 1 minute or so with the boot logo. Can anyone help? Thanks.

smith's report March 27, 2010, 10:02 am

Nevermind. Google found me the answer. Thanks though.

sking86 November 4, 2010, 4:51 am

plz help me ! I seem to have the same issue you had? I am stuck and google isnt being so helpful for once? wierd i know im not typing the right stuff i guess?

yoyo April 7, 2010, 11:12 pm

omg it works

PIZZAROSTONE April 26, 2010, 6:26 pm

I JAILBREAKED MY IPHONE 3G 2.2 with baseband 2.28 to OS 3.1.3 using snowbreeze. after this i tried to unlock it with blacksnow. after blacksnow was installed using cydia and rebooted, the iphone won’t start. it only shows the snowbreeze icon and nothing happens. i’ve tried the hard reset or boot thing using the power and home buttons combination but still not working. can some please help me???

iPhoneHeat April 26, 2010, 9:13 pm

you’re @ older baseband which BlackSn0w doesn’t support..
try YellowSn0w the older unlock solution..

quanpoko August 18, 2010, 11:22 am

Hi I have got the same problem using snowbreeze to upgrade my iphone to firmware 3.1.3 but with my baseband 2.28. Now, i cannot find a way to unlock it. I used ultrasn0w, blacksn0w…I heard yellowsn0w gonna work. But I cannot find the current source of it. I tried apt9.yellowsn0w.com and apt9.iha…something. but neither one worked…
Can anybody help??? thanks a lot

Freddy May 19, 2010, 5:58 pm

You guys rocks !

Works like a charm !


jawi May 29, 2010, 9:42 pm

Hi guys!
Is there now any Jailbreak for iphone 3GS 3.1.3 baseband 05.12.01 would you pls help me?

iPhoneHeat May 30, 2010, 3:30 pm

Spirit jailbreak… checkout the jailbreak iphone category

kickblade June 13, 2010, 4:26 am

i cant get the black snow to work . i have all other steps ready . but when i try to zip the file it just flashes on the screen so i cant copy and post the file. i need help

EMENEMS June 21, 2010, 2:13 pm

I have JAILBREAKED MY IPHONE 3G 2.2 with baseband 2.28 to OS 3.1.3 using snowbreeze. after this i tried to unlock it with ultrasn0w using cydia. after rebooting its started searching for network after little while it shows no network.

Plzzz Help

iPhoneHeat June 21, 2010, 7:02 pm

You need YellowSn0w to unlock baseband 2.28..
UltraSn0w unlocks baseband 04.26.08 which came with iPhone OS 3.0 stock

EMENEMS June 21, 2010, 8:36 pm

Thnxx for your co-operation, i really appreciate.

should i have to uninstall ultrasn0w before using yellow snow? kindly provide me steps to steps procedure or a link for that will be helpful, coz im a new user.

After Jailbreak with snowbreeze my iphone got struck promptly and my apple logo has changed to snow flakes, is ther any way to fix these things.

waiting for your further assisstant.

Unlock iPhone 3.1.3 June 27, 2010, 11:11 am

Just picked up an iPhone 4. Can any one tell me if there is a working unlock for the new iphone 4? I’ve already unlocked my 3.1.3 using this guide. But now i need an unlock solution for the 4

puneet September 13, 2010, 6:39 pm

I used snowbreeze to jailbreak and got an error. Itunes then tried to upgrade to OS 4 and now my Iphone is giving me 3194 error message.

I am not not able to do anything with iphone, what do you suggest I should do?


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