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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. Neo-Tech's Avatar
      Neo-Tech -
      Haha, Lmao
    1. Broomhead's Avatar
      Broomhead -
      lmao...noobs

    1. confucious's Avatar
      confucious -
      Quote Originally Posted by walidn View Post
      It doesn't work. Don't even consider it. The 3G is completely different.
    1. Bleeditout2130's Avatar
      Bleeditout2130 -
      Awesome and thank you!
    1. mavrik101's Avatar
      mavrik101 -
      Okay, so here's my question: I'm using an 8 gig 3g. I unlocked and jailbroke ( on T-Mobile). Settings show my firmware at 2.28.00. Software version 2.2 (5G77). I installed 3g fuzzy, just to see what the program does. 3g fuzz says i'm on bl 5.09.

      My question is , did version 2.2 come with bl 5.09? I thought that 5.09 could not be unlocked. Or is 3g fuzzy wrong when it queries the modem?
    1. confucious's Avatar
      confucious -
      So you are on BL 5.9 - what's the problem? Your BL is irrelevant unless you want to downgrade your BB. Your BL can NOT be changed (I do know it can be but those methods are irrelevent to 99.99999% of people reading this)
    1. Napoleon_PhoneApart's Avatar
      Napoleon_PhoneApart -
      Quote Originally Posted by Broomhead View Post
      lmao...noobs

      He should know better than to come in here and start correcting others' grammar and other English skills with Napoleon prowling the forum.
    1. confucious's Avatar
      confucious -
      I hate people's misuse of English.
      But if I corrected people's English they would just laugh at me so I don't bother (especially as I just know I'd cock up if I tried) so it takes a special kind of person to post nothing but a grammatical correction.
      Personally, I think he should be made a Mod and we should all thank him - or her - or it.
    1. mavrik101's Avatar
      mavrik101 -
      It's not a problem at all. I was just curious because I have two other iphones that I have not unlocked because of the 5.09. Just wondering if maybe, and it's a huge maybe, I did something that shouldn't have worked, but did in unlocking my first phone. All i keep reading is that 5.09 cannot be unlocked, so how is it that mine is, unless 3g fuzzy is reading it wrong?
    1. confucious's Avatar
      confucious -
      5.09 is the BootLoader. the unlock relies on the BaseBand being 2.28.00
      The BB can not be downgraded to 2.28 unless you have BL 5.8
      If you have never 'upgraded' your BB above 2.28 your BL is irrelevant.
    1. mavrik101's Avatar
      mavrik101 -
      Gotcha. Now I know. Thank you very much!
    1. crouching's Avatar
      crouching -
      Ok I have a question, I got a replacement iPhone from Apple store. Well it already has 2.2.1 (5H11) and modem Firmware of 02.30.03

      But how would I be able to SSH into the phone if i cant install SSH onto it?
    1. confucious's Avatar
      confucious -
      Why can't you install SSH onto it?
    1. StealthBravo's Avatar
      StealthBravo -
      ^ lmao

      Yea, what is the problem with installing SSH?
    1. Neo-Tech's Avatar
      Neo-Tech -
      What a silly question, :lol:
      Make sure your jailbroken first with QuickPwn or something.
    1. 6orly9's Avatar
      6orly9 -
      @stealthbravo

      sir i jailbreak my iphone from 2.2.1 to 2.2.0 it work but no signal my BB is 2.30, can u help me sir what should i do

      stealtbravo

      i know ur in US can i ask ur tel.# so that i can call u if u want to teach me how to unlock my iphone 3g?
    1. confucious's Avatar
      confucious -
      Quote Originally Posted by 6orly9 View Post
      stealtbravo

      i know ur in US can i ask ur tel.# so that i can call u if u want to teach me how to unlock my iphone 3g?
      That's a good idea - SB, why don't you post your phone number here so everyone can phone you?



    1. lilskaterpunk's Avatar
      lilskaterpunk -
      Quote Originally Posted by confucious View Post
      That's a good idea - SB, why don't you post your phone number here so everyone can phone you?



      LOL. Im sure he would like to receive phone calls from everyone
      Try a PM, might be better...
    1. 6orly9's Avatar
      6orly9 -
      @confucious

      heres my # 215 469 3245,pls anybody can call me or give miss call and ill be the one to call just to ask for help to unlock my iphone 3g, i downgrade to 2.2 from 2.2.1 but after that it was no signal.bcoz i want to use to another network that why i jailbreak it bit now its a ipod touch coz no signal.