How to Check Your iPhone Bootloader Version (Mac)

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Posted April 15, 2009 at 12:45pm by iClarified

These are instructions on how to find your iPhone Bootloader version using BBUpdaterExtreme. You can use these instructions to determine if an unlock is possible on an accidentally upgraded iPhone 3G.

Before you begin please have MobileTerminal and OpenSSH installed from Cydia. You can find MobileTerminal in the Terminal Support section of Cydia. For instructions on how to install an application from Cydia you can use this tutorial.

Step One
Download BBUpdaterExtreme from here and save it to your desktop.

Step Two
Launch the Terminal application from Applications:Utilities.

How to Check Your iPhone Bootloader Version (Mac)

Step Three
Make sure you iPhone is connected to the same wireless network as your computer and determine its IP Address using these instructions.

Step Four
Enter the following command into the Terminal window replacing the IP Address below with the one for your iPhone.
scp ~/Desktop/BBUpdaterExtreme root@192.168.0.125:/bin/BBUpdaterExtreme

You will be asked for your password. Enter alpine as the password.

Step Five
Input the following command to ssh into your iPhone.
ssh root@192.168.0.125

You will asked for your password. Enter alpine as the password.

Step Six
Input the following commands into the Terminal window
cd /bin

chmod 755 BBUpdaterExtreme

launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist

Step Seven
Your iPhone will now loose its network connections. Launch Mobile Terminal from the iPhone SpringBoard.

Step Eight
Type su into the terminal window. When asked for a password input alpine as the password.

Step Nine
Now input BBUpdaterExtreme queryversion to get the bootloader version of your iPhone. It will look something like Boot Loader Version: ICE2_BOOT_05.08_G2M3S2

NOTES: You will need to restart your iPhone to regain network connectivity. You could also type launchctl load /System/Library/LaunchDaemons/com.apple.CommCenter.plist into the terminal window.

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keith - November 8, 2011 at 7:54pm

MobileTerminal didn't work for me (as warned; not compatible with iOS 3 or 4), but I was able to use pTerm using root@127.0.0.1 to login.

Cheburatorei - May 18, 2011 at 10:24pm

So krwzy Mmm.. Later

BethT - June 11, 2009 at 3:02pm

Ignore my last post - I've made progress, gotten past Step 4 and am now on Step 6. However, when I input "cd/bin" after "Iphone:~ root#", I'm getting a response "No such file or directory". Thanks.

BethT - June 11, 2009 at 2:27pm

Attn: Zero or anyone who can help! I'm having that same problem others have after Step 4 getting the message "File Not Found", yet BBUpdaterExtreme is on my desktop and SSH is active on my iPhone. How can I use Cyberduck to try and make this work? I've never used an FTP or SSH program before. Thanks.

Khal - May 11, 2009 at 10:38am

This is my iPhone Bootloader Ver. ICE2_BOOT_05.09_G2M3S2, will the BBDown work?

anna - May 5, 2009 at 1:47am

for step 4, whether to use iphone IP address or desktop IP address? cuz' when it comes to the iphone's # thing, it shows no file exists

Zero - May 5, 2009 at 10:04am

Actually you always have to use the iPhone's ip address. Stupid question... Is SSH turned on on your iPhone??. You can also try all this by using cyberduck :)

anna - May 5, 2009 at 12:39pm

nvm, i got it... mine's on the 5.09, sigh

anna - May 5, 2009 at 1:33am

i tried but it always says no file exists...

anna - May 5, 2009 at 12:38am

whatif the IP address of iPhone and desktop is different, can i still check the bootloader?

Zero - May 5, 2009 at 12:59am

The IP addresses must be different of course but they have to be on the same network range.... For example the iPhone ip on my network is 192.168.0.103 and my Mac is the 192.168.0.101. As long as the first three octets are the same (192.168.0) you are good to go. If in any case this doesn't match it meams that you are connected to a different network or you are connected to an access point with a different IP range settings and you have to change that. Hope it helps :) Cheers Zero

Zero - May 3, 2009 at 7:13pm

MMM...... i'm on 6.02 :( I hope this could be done for that bootloader soon. Cheersssss

woodsen Saunders - April 30, 2009 at 3:13am

what if i am not one the correct boot loader, like 5.09??

Sebastian - April 28, 2009 at 12:44am

What if bootloader ver. is 06.02 will it still work? and can it be changed?

Zero - May 3, 2009 at 7:14pm

Nop.... i'm on that one too... we'll have to wait for unlock

nicholoas - April 26, 2009 at 9:06pm

After I type in the password alpine, I keep getting /var/mobile/Desktop/BBUpdaterExtreme: No sch file or directory Is there a way to fix this ?

Zero - May 3, 2009 at 7:12pm

after what step did you get this?

nicholas - May 3, 2009 at 8:54pm

step 4/

Zero - May 3, 2009 at 9:59pm

Try copying and pasting into the terminal window... if that doesn't happen, use cyberduck to send the file into the specified folder and then set the permissions in the BB app

tnt - April 19, 2009 at 7:10am

it doesn't work. any help?

hal - April 19, 2009 at 2:58am

Im having trouble after entering the command in step 3. after i type in alpine as the password, it says no such file exists. Anyone know what to do?

Zero - May 3, 2009 at 7:16pm

You could do it using Cyberduck or WinSCP Te only thing the first steps does are to copy the BBUpdaterExtreme to the bin folder and then give a 755 permissions to the program.

jenya - April 17, 2009 at 1:59am

Nissy, Did you solve your problem? I also got 6.02 and can not find any proper answer. Thanks

Crowles - April 16, 2009 at 6:13pm

I get as far as the shuting down the services and then this launchctl: Couldn't stat("/System/Libary/LaunchDaemons/com.apple.CommCenter.plist"): No such file or directory nothing found to unload iPhone:/bin root# So still can't check the boot loader version Any help please thanks

crowles - April 16, 2009 at 6:43pm

Sorted now, but not on 5.8, on 6.02

francochelsea - April 21, 2009 at 10:05pm

how did you manage? I still get no such file/directory exists!

nissy - April 15, 2009 at 5:03pm

I just had my iphone 3g exchanged at an apple store which was yellowsn0wed but the one that they gave me is with bl 6.02. what does this mean for a potential unlock in future?

Arif - April 15, 2009 at 4:15pm

I get scp ~/Desktop/BBUpdaterExtreme root@192.168.1.8:/bin/BBUpdaterExtreme The authenticity of host '192.168.1.8 (192.168.1.8)' can't be established. RSA key fingerprint is 6a:94:1d:ba:eb:2c:d4:1b:8f:f3:43:c6:04:2a:ea:b0. Are you sure you want to continue connecting (yes/no)? Help please

Zero - April 15, 2009 at 9:38pm

Just press Yes. That happens if you are connecting your iPhone for the first time through ssh :) Cheers

Arif - April 16, 2009 at 12:50pm

THANKS! BTW do you know how to disable that low battery logo on iPhone? The one that shows the red battery with the lighting bolt point to the outlet. Whenever I get that, I drop signal with T-Mobile.

Zero - April 16, 2009 at 1:32pm

Not a clue, but i think the iPhone could be on a power saving function (since you are running out of battery) that cause the signal drop. It has some sense to me :)

Arif - April 16, 2009 at 6:01pm

hmm.. it does make sense when its below 5% but I get that below 30%. I can probably use the phone for an hour+

Arif - April 15, 2009 at 3:54pm

What happens if 5.8 bootloader is on 2.2.1, 02.30.03?

Nathaniel - April 16, 2009 at 2:00pm

Then you follow the new baseband downgrade tutorial to get to the 2.28 baseband which can be unlocked with yellowsn0w

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