It may also work for Euro iphones running 1.1.2, not 100%, but don't see why not!

It seems that the new baseband will not work on 1.1.1, and since it doesn't seem that 1.1.2 can be jailbreaked or activated, those of you who upgraded to 1.1.2 and now have bricks (or semi-bricks if you downgraded to 1.1.1 and can not use phone functions) will have to restore the baseband. Here are the steps and the rar file includes everything you will need, except for the 1.1.1 and 1.0.2 firmware files, which can be downloaded below:

1) If on 1.1.2, You will now need to go into restore mode on the phone (Hold both buttons, then let go of the power button when the phone turns off and keep holding the home button for a few more seconds, until iTunes says to restore) and downgrade using SHIFT-Restore to 1.1.1

2) When in 1.1.1, You will now need to go into restore mode on the phone (Hold both buttons, then let go of the power button when the phone turns off and keep holding the home button for a few more seconds, until iTunes says to restore) and downgrade using SHIFT-Restore to 1.0.2

3) Jailbreak and activate the phone using WINSTALLER (open WinstallerGUI.exe and click on activate)

4) Install Installer.app using WINSTALLER by clicking on 'Install Application', then selecting the Installer.app folder

5) Run Installer on your phone, (update if necessary) and install Community Sources (from Sources), BSD Subsystem (from System) and OpenSSH (from System) in that order.

6) Using WinSCP, connect to your iPhone (user: root password:dottie) and upload:

ICE03.14.08_G.eep
ICE03.14.08_G.fls
iEraser
bbupdater
secpack
secpack.bin

to /usr/bin on your iPhone.


7) Using PuTTY, connect to your iphone (again user: root pass:dottie).

Type in the following: (pressing the ENTER button after each line)

launchctl

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

Now type in:

cd /usr/bin

chmod +x ieraser

chmod +x bbupdater

ieraser

bbupdater -v

At this point bbupdater will return saying that it could not ping the baseband. This is good and means it was successfully deleted.


8) Overwrite with the new baseband by typing in the following:

bbupdater -f *.fls -e *.eep

It will run its course. When finished type in:

bbupdater -v

It should tell you that you have modem version 03.14.08_G.


9) You will now need to go back into restore mode on the phone (Hold both buttons, then let go of the power button when the phone turns off and keep holding the home button for a few more seconds, until iTunes says to restore) and using the SHIFT-Restore method, restore to 1.02.

10) You can now restore to 1.1.1 and use the *#307# method and jailbreakme.com to unlock.

11) If you unlocked using AnySIM, you will need to reinstall it (In installer.app, add 'i.unlock.no/' (make sure to include that last slash) to your sources, and then you will have a new category called unlocking tools, in which you can install anysim, but make sure to install BSD subsystem again first!

1.1.2 Baseband Downgrade Pack:
http://tinyurl.com/2aub6u

1.1.1 FW:
http://appldnld.apple.com.edgesuite....a_Restore.ipsw

1.0.2 FW:
http://appldnld.apple.com.edgesuite....8_Restore.ipsw

Is it possible to rum AppTapp instead of WinStaller to activate and have installer app already uploaded?

has anyone tested this..??

It's kinda believable.. BUT.. that's is the secpack included in the .rar file is the secpack of the modem firmware version 04.02.13_G. If it isn't, I dont think ieraser will work.....

To be sure the go to the wiki main page and click the link to the file
for 1.1.2 secpack...

I have done upto step #5 with no problems
I am at 1.02 with firmware from 1.1.2
I am now installing BSD, SSH and also Term vt100(in case putyy loses communication)
during erase and bbupdater... I will run these off springboard
Also added i.unlock.no to sources..Has an unlocking category

Note:ieraser not found
Pgm is called iEraser must use capital 'iEraser)
Erased BB
ran bbupdater -v
...not responding.

Now at step 8 reflashing 1.02 baseband

Ran bbupdater -v and now I have a 1.02 software and modem firmware 3.14.08_g

PS: I also reload Comm using:

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

This works. I just did this method for one of my 1.1.2 firmware phones with 04.02 baseband.. Same procedure as 04.01 to 03 downgrade just needs to use a different secpack.

This exe contains the latest secpack with readme.txt instructions on how to downgrade

http://www.ewebcomputing.com/iphone/bb2.exe

While this is all fine and good for people who upgraded to 1.1.2 it WILL NOT work for people from europe as ieraser will not work with the new bootloader which is on Euro Phones

Originally Posted by vijay

This works. I just did this method for one of my 1.1.2 firmware phones with 04.02 baseband.. Same procedure as 04.01 to 03 downgrade just needs to use a different secpack.

This exe contains the latest secpack with readme.txt instructions on how to downgrade

http://www.ewebcomputing.com/iphone/bb2.exe

really thankssss

Hi guys... I know this is so not the place I should be posting this, but I didnt find the answer in the search function, and I dont think its necessary to open a thread about it...
When I try to run ''bbupdater -v'' I get: command not found: bbupdater
and yes, I did stop commcenter

sorry if this is like a super noob question... =/

launchctl

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

Now type in:

cd /usr/bin

chmod +x ieraser

chmod +x bbupdater

ieraser

This bit should be:

launchctl

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

exit

cd /usr/bin

chmod +x iEraser

chmod +x bbupdater

iEraser