Downgrade to 1.0.2 baseband after 1.1.2 - Instructions for all

[Midgetinabikini]

First of all, downgrade and jailbreak+ssh+activate 1.0.2, install BSD subsystem and Open-ssh. i used iNdependence to fully unlock the iPhone and installer.app to install BSD and Open-ssh.

http://cats.omerkatzir.com/Restore Baseband.ziphttp://cats.omerkatzir.com/Restore Baseband.zip

1. put all files in /usr/bin folder on the iphone, Cyberduck is the best way to do so.
2. SSH into the phone (user: root pass: dottie) and stop the CommCenter by typing launchctl remove com.apple.CommCenter
3. run bbupdater -v
4. cd /usr/bin/ and then chmod +x ieraser
5. run ieraser (just type ieraser) this will WIPE your baseband.
6. run bbupdater -v again. it will not find any firmware now.
7. run bbupdater -e ICE03.14.08_G.eep -f ICE03.14.08_G.fls
8. run bbupdater -v it will tell you you run version 3.14
9. restart the iphone

the zip file contains all the files you need to put in /usr/bin. you can just copy&paste the commends. i guess you can do the same under Windows, i really dont recall how to use ssh in Windows.

Please, do it slowly! if you have any problem, you can mail me at: komer83@gmail.com

 

[DenniZ]

Does it work for 1.1.2 OTB ?

 

[Midgetinabikini]

I have no idea...

 

[duskyyouth]

i just tried your steps and it worked!

 

[CrockettGTO]

Does it work for 1.1.2 OTB ?

I am wondering the same thing

 

[imacdaddy]

First of all, downgrade and jailbreak+ssh+activate 1.0.2, install BSD subsystem and Open-ssh. i used iNdependence to fully unlock the iPhone and installer.app to install BSD and Open-ssh.

http://cats.omerkatzir.com/Restore Baseband.ziphttp://cats.omerkatzir.com/Restore Baseband.zip

1. put all files in /usr/bin folder on the iphone, Cyberduck is the best way to do so.
2. SSH into the phone (user: root pass: dottie) and stop the CommCenter by typing launchctl remove com.apple.CommCenter
3. run bbupdater -v
4. cd /usr/bin/ and then chmod +x ieraser
5. run ieraser (just type ieraser) this will WIPE your baseband.
6. run bbupdater -v again. it will not find any firmware now.
7. run bbupdater -e ICE03.14.08_G.eep -f ICE03.14.08_G.fls
8. run bbupdater -v it will tell you you run version 3.14
9. restart the iphone

the zip file contains all the files you need to put in /usr/bin. you can just copy&paste the commends. i guess you can do the same under Windows, i really dont recall how to use ssh in Windows.

Please, do it slowly! if you have any problem, you can mail me at: komer83@gmail.com

Hi Midgetinabikini , I've got a permission denied with I ran bbupdater -v in step 3. I suppose these are the same steps found here. http://www.winandmac.com/mobile/iphone/unlock-iphone-112-via-downgrade/#comment-1680

How long does the process take when running ieraser? My terminal is stuck at "Waiting for data..."

-sh-3.2# launchctl remove com.apple.CommCenter
-sh-3.2# bbupdater -v
Resetting target...
pinging the baseband...
issuing +xgendata...
firmware: DEV_ICE_MODEM_04.02.13_G
eep version: EEP_VERSION:208
eep revision: EEP_REVISION:1
bootloader: BOOTLOADER_VERSION:3.9_M3S2
Done
-sh-3.2# cd /usr/bin/
-sh-3.2# chmod +x ieraser
-sh-3.2# ieraser
Resetting the Baseband...Done
Opened: /dev/tty.baseband
iEraser: tool by geohot
thanks to gray and the dev team for the implementation
thanks to nightwatch for the awesome toolchain
and thanks to anonymous, iProof, lazyc0der, and dinopio for the idea for this cool trick
this tool erases your main fw, starting at 0x20000. you need this for the testpoint to work
you need a file called secpack matching your current firmware version in this folder
see http://iphonejtag.blogspot.com for instructions on finding this file
Waiting for data...