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  • 1.1.1 Baseband Downgrade Achieved!
    cash edit: All you OSX guys out there I have written a nice guide for you, it takes a little time but i tried to be as detailed as possible.
    Click here for the Downgrade from 1.1.1 to 1.0.2 complete guide including baseband via osx

    Revan has made the windows guide click here

    All right! If any of you have "bricked" iPhones from upgrading unlocked iPhone's to 1.1.1, you are now able to downgrade without paying a dime!

    The guys over at RDGaccess.com have put together a guide on how to do it, here it is:


    How To

    0. Download firmware 1.0.2 from apple: http://appldnld.apple.com.edgesuite....8_Restore.ipsw

    1. rename it to iPhone1,1_1.0.2_1C28_Restore.zip and unpack.

    2. extract the ramdisk file from it by typing

    dd if=694-5259-38.dmg of=ramdisk.dmg bs=512 skip=4

    3. mount the ramdisk by doubleclicking it (on mac). On windows use some HFS tools to peek inside it or get the files from someone who extracted it already.

    4. Put your phone into DFU mode and do option-restore in iTunes. This will reflash everything to 1.0.2. You will get an error at the end because it couldnt reflash the baseband. You will end up with a yellow triangle.

    5. Quit iTunes, launch iNdependence and quit it again, relaunch iTunes. Press the power button on the phone for 3-4 seconds. After like 10 seconds you end up on the activation screen.

    6. Complete the Downgrade by Jailbreaking / Activating, Installing SSh on to the phone etc. There are tons of wiki's about that so I won't repeat. (probably also true for step 4,5)

    7. Extract the baseband firmware and EEPROM files of 3.14 from the ramdisk of firmware 1.0.2. The files are named ICE03.14.08_G.eep and ICE03.14.08_G.fls and are located under /usr/local/standalone/firmware.

    8. Get the Secpack of baseband firmware 4.0. Its at the bottom of this post.

    9. Download ieraser2 from http://www.fink.org/ieraser/ or from Geohot's blog.

    10. Install all the tools on to the phone (i use the location /usr/local/bin)needed to get ssh access to the 1.0.2 firmware phone and upload ieraser2, the secpack, the firmware 3.14's FLS and EEP file and anySIM 1.0.2.

    11. ssh to the phone. Stop CommCenter? by typing:

    launchctl remove com.apple.CommCenter?

    12. run bbupdater -v. it will tell you you run version 4.01 of the baseband.

    (bbupdater is a tool by apple which is also on the ramdisk)

    13. run ieraser2. This will WIPE your baseband, given a file "secpack" is in the same directory and this is a version 4 secpack.

    14. run " bbupdater -v " again. it will not find any firmware now. 15. run " bbupdater -e ICE03.14.08_G.eep -f ICE03.14.08_G.fls " 16. run " bbupdater -v " it will tell you you run version 3.14 At this point in time you will still have a IMEI number starting with 004999... and its not of use yet. So still bricked but at least downgraded to version 3.14.

    17. run anySIM Version 1.0.2 (note that older versions might not be good here as 1.0.2 has a lot of fixes for this kind of stuff).

    Now you have a unlocked 3.14 baseband with IMEI being your original one! Congratulations you now fully recovered from your update 1.1.1 and are back to 1.0.2.

    If you want to return to virgin state again you can stop the commcenter again and repeat " bbupdater -e ICE03.14.08_G.eep -f ICE03.14.08_G.fls " again to reflash the "locked" version of the baseband.


    All files needed are here
    This article was originally published in forum thread: 1.1.1 Baseband Downgrade Achieved! started by Kyle Matthews View original post
    Comments 178 Comments
    1. DrTroy's Avatar
      DrTroy -
      thank you sir, quick and clear answer!
      Love you guys, I'm gonna try it right now!
    1. DoerrFan's Avatar
      DoerrFan -
      Im getting no service at all, do not tell me i just completely destroyed the baseband.

      EDIT: ran anySIM back in buissness.
    1. DrTroy's Avatar
      DrTroy -
      Quote Originally Posted by DoerrFan View Post
      Im getting no service at all, do not tell me i just completely destroyed the baseband.
      it's scaring me as I'm actually doing it lol
      somebody can ease our mind ?
    1. DoerrFan's Avatar
      DoerrFan -
      Quote Originally Posted by DrTroy View Post
      it's scaring me as I'm actually doing it lol
      somebody can ease our mind ?
      Redid the process, running anySIM now....
    1. DrTroy's Avatar
      DrTroy -
      on step 13, when I type ieraser, it tells me :

      zsh: permission denied: ieraser

      what's causing this ?

      EDIT : found the answer
    1. bigdogjonx's Avatar
      bigdogjonx -
      Quote Originally Posted by southsky View Post
      I am having same virgining issue (the last step). I too have tried many things to get it to work.

      I just want to have virgin 1.1.1 update for my backup phone...
      So after many many attempts and looking more into this, this is not possible at the moment, the last step info isnt clear on that. Anyone who used anySim or iUnlock before has basically got a corrupted NVRAM and reflashing the baseband to put it back to stock doesnt truly put it back to stock, it clears the baseband to clear any remnents of an unlock but the NVRAM is still corrupted and therefore you will get the bogus 00499 IMEI value so its pointless to try this.

    1. DoerrFan's Avatar
      DoerrFan -
      Ok, i redid the process, and YES ITS BACK!!!!
      Do NOT upgrade to 1.1.1 even if you do the virginizing process, it really is not virginized enteirelly as bigdogjonx says above. Im so happy my phone finally makes calls again!!!!!!
    1. DrTroy's Avatar
      DrTroy -

      IT WORKED !!!!!


      Thank you thankn you thank you !!!

      But now I can't connect to FUGU anymore


      I used this settings :

      my Ip :

      ID User : root
      Port : 22

      Folder : /

      Like I used to, and now it doesn't connect.
      what has changed ? I don't understand
    1. meatwagon's Avatar
      meatwagon -
      cash, on 2 phones now that i have done. i get a strange error when i try to delete the anysim.app it gives and unknow error. and now i cant install anything from apptapp . i think there is something preventing me to write to the phone.. any ideas what??!?!?
    1. DoerrFan's Avatar
      DoerrFan -
      EDGE is not working. Anyone else having this problem?

      EDIT: Restored and its back
    1. rotary2333's Avatar
      rotary2333 -
      Im Getting An Incorrect Sim
      Inset An Unlock And Valid Sim To Activate Iphone

      When Can I Do Fix This Problem Please Help
    1. xp02ed's Avatar
      xp02ed -
      Guys... This should work it worked for me!

      I suggest.. i got a 1.0.2 fone. i did the upgrade! so baseband and firmware was the new one..

      Basically i followed the downgrade instructions! (firmware that is )
      Jail broke it.. installed apptapp.. installed bsd, openssh.. (didint install terminal coz i used putty) then connect to fone! followed the instructions here (might get chmod error)

      i justed chmod 777 filename instead..

      installed anysim.. went through it! restart! boom! optus (australia) ! it works as a fone again!

      PS.. think of a downgrade exactly how you would update the firmware to 1.0.2
    1. XFaega's Avatar
      XFaega -
      Did the downgrade from 1.1.1 to 1.0.2 and did a restore of 1.0.2 and all is good. If you are just downgrading skip the unlock part. Good work and keep up the good work. Many thanks.
    1. Porpartes's Avatar
      Porpartes -
      Hi CASH...When I get into step 12, it drops me out of the terminal, and close connection.(after I put the dottie pass)
    1. yowiphone's Avatar
      yowiphone -
      wohoo im gonna try this method!!
    1. XFaega's Avatar
      XFaega -
      Quote Originally Posted by Porpartes View Post
      Hi CASH...When I get into step 12, it drops me out of the terminal, and close connection.(after I put the dottie pass)
      Did you do the rm -f ~/.ssh/known_hosts ? If you haven't you will have to clear he old .ssh/known_hosts.
    1. xanthus86's Avatar
      xanthus86 -
      if i have a 1.0.2 unlocked phone and want to relock my phone so i can update to 1.1.1 what steps should i take??
    1. Cody Overcash's Avatar
      Cody Overcash -
      start at restoring baseband. step 10 in osx guide if i remember correctly
    1. thebambino's Avatar
      thebambino -
      i think im doing everything fine when i get to just about the last step running ieraser i only get to this pont and nothing
      see http://iphonejtag.blogspot.com for instructions on finding this file
      Waiting for data...
      where did i go wrong i followed the guide to my knowledge pretty well but i get stuck here any help?
    1. xanthus86's Avatar
      xanthus86 -
      Quote Originally Posted by cash7c3 View Post
      start at restoring baseband. step 10 in osx guide if i remember correctly
      thnx so much cash...

      so its starting from step 10 ryt?? but until wat step do i do so i can 1st upgrade to the 1.1.1 and jailbreak again so i can put third party apps?