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  • Downgrade 3G Baseband from 2.30 to 2.28

    For those who have wanted to unlock their iPhone 3G but have updated to the 2.30 baseband, hope is now here. Thanks to the work of dev pH, a tool has been created to downgrade your baseband, and allow a unlock to occur once again.

    only works for baseband 2.30 and bootloader 5.8

    (im sorry if the original post didnt clarify enough because doerrfan decided to reword things when he moved it )

    to check your bootloader version, visit:
    Baseband Commands - The iPhone Wiki

    (run at+xgendata in minicom)

    To run the pHaseBanDowngrader, connect via SSH to your iPhone and copy the downloaded folder (phasebandowngrader) into the folder "/Applications" on your iPhone.
    Note: The folder MUST named phasebandowngrader with lowercase letters!

    To run it, open MobileTerminal and type "login". The user is "root" and password is "alpine" by default. Then type: "cd / Applications/phasebandowngrader/", then, to run the downgrader, type "./phasebandowngrader"
    METHOD 2 (found by tattoo Jack)
    For other people who still needs a full instruction, here is an update to Tom's instruction.

    Download BBUpdaterExtreme here:
    RapidShare: Easy Filehosting

    Download BSPatch Here:
    GBAtemp.net :: Downloads :: ROM patchers & header info :: bspatch

    Here's where you'll need some command prompt skills. Extract the BSPatch program and iPhone_3G_02.28.00_baseband.zip and all related files into a folder you can remember (ex. Catcher). Also, place the ICE2_02.28.00.fls and downgrade.patch in the same folder (downgrade.patch is from Master geohot above found here: http://lpahome.com/geohot/downgrade.patch)

    Open your command prompt by hitting start, then run, and type in "cmd" without the quotes and hit enter. In the command prompt, you'll need to type

    cd Catcher

    "Catcher" is the example directory but you can replace it with wherever you've placed the BSPatch and ICE2_02.28.00.fls files in.

    Now type in:

    bspatch ICE2_02.28.00.fls patchedbaseband.fls downgrade.patch

    In the example folder, there will now be a new file called patchedbaseband.fls, which is pretty self explanatory.

    Copy that file back to your desktop or a folder that you can easily find and also copy ICE2_02.28.00.eep and BBUpdaterExtreme into the same place.

    Rename patchedbaseband.fls to ICE2_02.28.00.fls.

    Now that you have your patched baseband, your BBUpdaterExtreme and the .eep file in one place, you're ready to move them onto your phone.

    You'll need to know how to SSH into your iPhone, and I'm not going to go into detail about that, but you should be able to find that information easily.

    (you can also use DiskAid or Iphone Browser to upload the files instead of SSH)

    Copy the three files *ICE2_02.28.00.fls* - the new one that is patched
    ICE2_02.28.00.eep
    and
    BBUpdaterExtreme into /var/root
    (make sure you're not in private/var/root).

    Now, you'll need to find download and install Mobile Terminal, which can be found in Cydia or Installer, or I guess the new Icy.

    After you've gotten Mobile Terminal installed, open it up and follow these instructions carefully (capitalization counts!) to check what version of bootloader you have.

    (All case sensitive and you may need to use cd .. to change to the right directory you've uploaded the files to)

    1. Type in: su
    2. Type in the password: alpine
    3. Type in: chmod 755 BBUpdaterExtreme
    4. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
    5. Type in: ./BBUpdaterExtreme queryversion

    Look for "Boot Loader Version:" in the output.

    Mine said "5.09" which I can only imagine means 5.9 so I did not have the availability to downgrade.

    Here you can stop if you're like me, and don't have the option to downgrade. You can restart your phone (because the phone is now not working since the CommCenter process has stopped running) to restore it to normal, or alternatively you can type in

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

    But you may be in luck and have 5.8, in which case, continue on to the downgrade.

    Close Mobile terminal, re-open it, and type in the following commands.


    (All case sensitive and you may need to use cd .. to change to the right directory you've uploaded the files to)

    1. Type in: su
    2. Type in the password: alpine
    3. Type in: chmod 755 BBUpdaterExtreme
    4. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
    5. Type in: ./BBUpdaterExtreme update -f ICE2_02.28.00.fls -e ICE2_02.28.00.eep
    6. Reboot your iPhone

    Check under Settings-General to see your (hopefully) downgraded baseband!
    simplified version of method 2 (Koolman0)
    For those of you that are still having problems This Should be more simple
    .................................................. .................................................. .........
    Download:
    1. Make a folder on your desktop
    2. Extract All to the same folder (All Three Files)
    3. In the Folder there should be a Shortcut file called "Prompt" open it
    4. Now type in:
      bspatch ICE2_02.28.00.fls patchedbaseband.fls downgrade.patch
    5. Now Make a New Folder in that Directory Call it "new"
    6. Three Files need to be copied To the "new" folder
      • patchedbaseband.fls
      • ICE2_02.28.00.eep
      • BBUpdaterExtreme
    7. Rename patchedbaseband.fls to ICE2_02.28.00.fls
    8. SSH into your iPhone
    9. Copy the Three files (patchedbaseband.fls, ICE2_02.28.00.eep, BBUpdaterExtreme) to /private/var/root
    10. Now go to MobileTerminal (on your iphone, This app can be Downloaded from Cydia or installer)
    11. Type in the Following Commands *****Case Matters*****
      1. Type in: su
      2. Type in the password: alpine
      3. Type in: cd /var/root
      4. Type in: chmod 755 BBUpdaterExtreme
      5. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
      6. Type in: ./BBUpdaterExtreme queryversion
    12. NOTE:
      • if you see a 5.8 continue
      • if you see a 5.9 STOP this will not work for you Sorry
    13. Continue if 5.8
      1. Type in: su
      2. Type in the password: alpine
      3. Type in: cd /var/root
      4. Type in: chmod 755 BBUpdaterExtreme
      5. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
      6. Type in: Type in: ./BBUpdaterExtreme update -f ICE2_02.28.00.fls -e ICE2_02.28.00.eep
      7. Reboot Device
    14. Once the iPhone has restarted go to Settings> General> About> At the bottom should say 02.28.00 (then you jump up and down in JOY)
    15. Last But not Least Unlock
    P.S.
    Here are the three Files you will be creating
    so just copy these to you iphone (continue from Step 8 or 9)
    Three Files inside this RAR
    this tool has been tested by multiple people and WILL NOT brick your device. if you have bootloader version 5.9 it will not work. you can try but it will not work (still no risk of brick)

    use at your own risk, but there is really no risk of doing any damage to your device unless you do something absurd

    MMI Members Download

    Apple Forums & iPhone Forums, Mods, Hacks, News, Themes, Downloads, and more! | ModMyi.com - Downloads - phasebandowngrader

    External Mirror

    phasebandowngrader.zip
    This article was originally published in forum thread: Downgrade 3G Baseband from 2.30 to 2.28 started by JStraitiff View original post
    Comments 341 Comments
    1. JStraitiff's Avatar
      JStraitiff -
      thank you poeidon for taking care of things while i was away
    1. LastSonOfKrypton's Avatar
      LastSonOfKrypton -
      This thread was a great read. Wish there was a program to fix a cracked screen

      So I thought I'd try this and I need to know if it'll work...

      I'm on firmware Viagra
      my bootloader is Lugz
      my baseband is Rubber

      Can I do it?
    1. tattoojack's Avatar
      tattoojack -
      Quote Originally Posted by LastSonOfKrypton View Post
      This thread was a great read. Wish there was a program to fix a cracked screen

      So I thought I'd try this and I need to know if it'll work...

      I'm on firmware Viagra
      my bootloader is Lugz
      my baseband is Rubber

      Can I do it?
      lmao
    1. JStraitiff's Avatar
      JStraitiff -
      Quote Originally Posted by LastSonOfKrypton View Post
      This thread was a great read. Wish there was a program to fix a cracked screen

      So I thought I'd try this and I need to know if it'll work...

      I'm on firmware Viagra
      my bootloader is Lugz
      my baseband is Rubber

      Can I do it?
      sure will

      unless u upgraded to cialis tabs

      then you'll most likely have bootloader limp
    1. LastSonOfKrypton's Avatar
      LastSonOfKrypton -
      Quote Originally Posted by him121213 View Post
      sure will

      unless u upgraded to cialis tabs

      then you'll most likely have bootloader limp
      lmao
    1. tattoojack's Avatar
      tattoojack -
      Quote Originally Posted by LastSonOfKrypton View Post
      lmao
      times 2
    1. Poseidon79's Avatar
      Poseidon79 -
      x 3
    1. Clyrko's Avatar
      Clyrko -
      I need help sshing the files to / vars/ root instead of private/vars/root. please and thanks
    1. plcrules's Avatar
      plcrules -
      great we found a way to downgrade the base band
      now we need to find a way to downgrade the bootloader unless any already knows how
      cuz that will help
    1. RHMobileJake's Avatar
      RHMobileJake -
      Followed the TattooJack instructions list and im stuck on the step:

      After you've gotten Mobile Terminal installed, open it up and follow these instructions carefully (capitalization counts!) to check what version of bootloader you have.

      (All case sensitive and you may need to use cd .. to change to the right directory you've uploaded the files to)

      1. Type in: su
      2. Type in the password: alpine
      3. Type in: chmod 755 BBUpdaterExtreme
      4. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
      5. Type in: ./BBUpdaterExtreme queryversion

      I am in /var root# and it tells me when I type "chmod 755 BBUpdaterExtreme" I get an error saying chmod cannot access 'BBUpdaterExtreme' no such file or directory.

      Not sure how to fix, if anyone can tell me where I made my mistake I would appreciate it
    1. LastSonOfKrypton's Avatar
      LastSonOfKrypton -
      Quote Originally Posted by plcrules View Post
      great we found a way to downgrade the base band
      now we need to find a way to downgrade the bootloader unless any already knows how
      cuz that will help
      I'm not 100% sure about this but I belive the bootloader is hardware related and can't be downgraded ever.

      Like I said, I'm not 100% but I'm pretty sure that's how it is.
    1. tattoojack's Avatar
      tattoojack -
      Quote Originally Posted by Clyrko View Post
      I need help sshing the files to / vars/ root instead of private/vars/root. please and thanks
      its in the guides, or in the magical "search" button

      Quote Originally Posted by plcrules View Post
      great we found a way to downgrade the base band
      now we need to find a way to downgrade the bootloader unless any already knows how
      cuz that will help
      time
      and patience

      this is "free of charge"

      and besides,
      its been since the new year that an update has come out
      just take this as a thank you for all the peeps on 5.8 who now dont have 3g ipods

      and be thankful knowin that as a 5.9'er you are next in line to be helped,

      free of charge

      at least you dont have 6.02 like all my dumba$$ friends

      could always be worse


      Quote Originally Posted by RHMobileJake View Post
      Followed the TattooJack instructions list and im stuck on the step:

      After you've gotten Mobile Terminal installed, open it up and follow these instructions carefully (capitalization counts!) to check what version of bootloader you have.

      (All case sensitive and you may need to use cd .. to change to the right directory you've uploaded the files to)

      1. Type in: su
      2. Type in the password: alpine
      3. Type in: chmod 755 BBUpdaterExtreme
      4. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
      5. Type in: ./BBUpdaterExtreme queryversion

      I am in /var root# and it tells me when I type "chmod 755 BBUpdaterExtreme" I get an error saying chmod cannot access 'BBUpdaterExtreme' no such file or directory.

      Not sure how to fix, if anyone can tell me where I made my mistake I would appreciate it
      did you ssh the files into
      /var/root?
      or
      /private/var/root?
      it matters
      and if so you did not cd to the correct directory
    1. shahir29's Avatar
      shahir29 -
      when i go to phasebandowngrader is says permission denied. so i used winscp to ssh in an change octel file to 0755 but i couldnt find octel i only found this:
    1. RHMobileJake's Avatar
      RHMobileJake -
      I used iPhone Browser for the PC to move the files into var/root, when I am in iphone browser it shows the 3 files in both private/var/root and var/root in the file system. I however originaly only copied them to the root/var/root according to the directory on the sidebar in ipb.
    1. ggab's Avatar
      ggab -
      So I checked my bootloader version and it said: "Boot Loader Version: ICE2_BOOT_05.08_G2M3S2" so I figured I was good to go with that 5.08 in there.

      I run the BBUpdaterExtreme per http://www.modmyi.com/forums/general...ml#post3877511 and after it runs through everything at the end it says:
      !!! Exception at :0:
      - BBUReturnError(1)/2:Unsupported memory class CodeClass for EEP transfer. Are you sure ICE2_02.28.00.eep is an EEP file?
      Re-enabling sleep....OK


      I rebooted and I'm still at 2.30 baseband. According to "Tom" at On the iPhone: 5.8 Exploit I'm screwed. He said "When you get the .eep error: Are you sure this is an eep file? Or something similar, that means your bootloader cannot be exploited, i.e. you're screwed for now."

      I don't get why I can't do this if I have the 5.08 bootloader? Anyone have any insight on that?


      Just saw that someone else at that same site had success with the same version of the bootloader that I have....
      Imanzano said...

      It worked with my 3g iphone boot loader ICE2_BOOT_05.08_G2M3S2
      firmware 2.2.1 baseband 02.30.

      Thank you George, and thank you Tom for your post, it helped me very much.

      Good luck




      Doesn't make me very happy! LOL
    1. vtc08's Avatar
      vtc08 -
      6.02:-(
    1. tacoda's Avatar
      tacoda -
      it dosent matter where you put the files. I put the files "root/" and cd to that directory.
    1. JStraitiff's Avatar
      JStraitiff -
      Quote Originally Posted by LastSonOfKrypton View Post
      I'm not 100% sure about this but I belive the bootloader is hardware related and can't be downgraded ever.

      Like I said, I'm not 100% but I'm pretty sure that's how it is.
      it is hardware related but it can change sometimes

      in this case it can.. but but has not been done that i know of
    1. cpjr's Avatar
      cpjr -
      ^The bootloader itself is software....and depending on the version can be downgraded.

      (Not to say the phone will work afterwards, depends)
    1. tomo3014's Avatar
      tomo3014 -
      Quote Originally Posted by RHMobileJake View Post
      Followed the TattooJack instructions list and im stuck on the step:

      After you've gotten Mobile Terminal installed, open it up and follow these instructions carefully (capitalization counts!) to check what version of bootloader you have.

      (All case sensitive and you may need to use cd .. to change to the right directory you've uploaded the files to)

      1. Type in: su
      2. Type in the password: alpine
      3. Type in: chmod 755 BBUpdaterExtreme
      4. Type in: launchctl unload /System/Library/LaunchDaemons/com.apple.CommCenter.plist
      5. Type in: ./BBUpdaterExtreme queryversion

      I am in /var root# and it tells me when I type "chmod 755 BBUpdaterExtreme" I get an error saying chmod cannot access 'BBUpdaterExtreme' no such file or directory.

      Not sure how to fix, if anyone can tell me where I made my mistake I would appreciate it
      hey i had the same problem.

      before you do number 3, try cd /var/root
      and try 3,4,5
      it worked for me.

      t