Downgrade iPhone Baseband From 2.30.03 to 2.28.00 with pHaseBanDowngrader

By Sandip Dedhia on April 15, 2009
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Downgrade iPhone 3G Baseband 2.30.0 to 2.28.0Even after several warnings from iPhone Dev team, not to upgrade iPhone 3G 2.0 to firmware 2.2.1 still many users upgraded accidentally or out of curiosity. The reason behind not to upgrade to firmware 2.2.1 was once you upgrade iPhone 3g to firmware 2.2.1 it also upgrades your baseband from 2.28.00 to 2.30.03.

Once your baseband is changed to 2.30.3 you can not use yellowsn0w (first soft unlock tool for iPhone 3G) to unlock your iPhone 3g, also method to downgrade iPhone 3G 2.2.1 to 2.2 doesn’t work as it doesn’t downgrade your baseband.

There is only one hope and that is iPhone dev team to release yellosn0w version which can unlock iPhone 3G firmware 2.2.1 with baseband 2.30.03 but there is no news about iPhone dev team future plans on working another yellowsn0w version, which is big downside for all those iPhone 3G users stuck with firmware 2.2.1.

Well now there is no need to keep your iPhone 3G 2.2.1 locked, as dev pH has created a tool which lets you to downgrade your baseband, and allow a unlock to occur once again. The name of this tool is pHaseBanDowngrader. However it only works for iPhone 3G with baseband 2.30.03 and bootloader 2.8.

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”

Download pHaseBanDowngrader to downgrade iPhone 3G baseband 2.30.03 to 2.28.0

Download PHaseBanDowngrader

How to Check your iPhone Bootloader version

Visit Baseband Commands – The iPhone Wiki

You can jailbreak iphone 3G firmware 2.2.1 with official quickpwn 2.2.5 and pwnage tool 2.2.5

Posted in | Tagged , , | 37 Responses
Sandip Dedhia

Sandip Dedhia

Sandip Dedhia is the founder of Blogsdna.com, he loves to write on technology, gadgets & web services. At Blogsdna you can read his Windows & freeware software related articles. He is on twitter too @sandipnd View author profile

  • denis

    hello i have tried to do it but after “cd /Applications/phasebandowngrader/” and then i type “./phasebandowngrader” and it is saying that the permision i sdenied any help PLEASE

  • ii

    when i do, type “./phasebandowngrader” it said permission denied
    what should i do now?

  • phoeaung2

    i write this instruction “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” ” but phone show ” -sh: ./phasebandowngrader: Permission denied “

  • Andy

    WARNING: This does NOT work if your bootloader is 5.09. This is ONLY for 5.08.

  • Spartan029

    It didn’t work…. I just got a new iPhone yesterday with 2.2.1 firmware pre-installed and just tried downgrading. Got the message to reboot and blah blah and now i still see 2.30.03

  • James Karn

    ‘iPhone 3G with baseband 2.30.03 and bootloader 2.8′ it should be bootloader 5.8. Just thought id tell you.

  • havid abdad

    NOT work!!!!!!!!!!!! Plcs help me…:(
    email me plcs….

  • joey

    hey can you explain it all a bit better?
    i don’t know how to transfer the phasebandownloader to applications for iphone. please reply.

    thanks, Joey.

  • pavan

    i followd the all steps everything done.but when i gave the cmd “./phasebandowngrader”
    its saying “-sh: ./phasebandowngrader: permission denied”

    can anyone help me to unlock .

    version 2.2.1(5h11)
    modem firmware:02.30.03

  • pavan

    frieds i got th solution .
    do the all steps but when ur oing to give the last step “./phasebandowngrader”.wait and give this command

    “chmod 755 phasebandowngrader”
    then give “./phasebandowngrader”

    enjoy .
    bye

  • Qaisar

    i am getting error to run cmd ./phasebandowngrader .after hitting the return i am getting message Permission Denied.So what i do now?i try it several time but the error remain.Help are greatly appreciated.

  • mohmed

    does this works for all bootloader??

  • SikWidiT

    Oki im having an issue with copiying it to the applications section is it supposed to be Zipped or Unzipped and Does that make a difference? Someone Get at me PLEASE

  • Sam

    well i tired…
    it aint working :(
    aww man im doomed.. my stupid mistake of updating it hearing that it can be pwned! well which is true
    but i didnt knw abt the baseband and all..
    hmmp*

    any peeps got this working?
    if ya do!
    PLZ email me –> samjc2007@gmail.com

  • Lori

    It is suppose to work for iphones sold before September. If it says denied it means your phones bootloader is not 5.8
    There is now a program on Cydia for this, its called “3G Baseband Downgrade”. Its under the section called system and its all the way down at the bottom. I have never tried it so I would be very careful and check it out first.
    Good Luck

  • Arty

    I did it 4 times, it doesnt work, it work just for a wile, and then i after iphone restart it self baseband remain 2.30.03 steel!

  • mike

    i have a jailbroken iphone 3g version 2.2(5g77) with 02.30.03 firmware and cant find any way to unlock for another carrier ( t mobil )can somebody help

  • sam

    Use winrar and it will make the folder when uncompress. Copy the whole folder to /applications

    I need help here, everything works well with lots of OK’s, but I’m still in 2.30.03

  • LALIT JAIN

    i have a iphone with bootloader 5.09 help me to unlock the phone send me when the lock will open thanks

  • marshall

    “To run the pHaseBanDowngrader, connect via SSH to your iPhone”

    what is SSH?

  • http://www.barakotta.com Barakat

    i did exactly what was been ordered ,and til the last step when its tell to reboot ,

    but nothing change !!! so why !!!

    my iphone is brand new and based on 2.30.03

  • Santiago37

    Hey Marshall regarding you question, if you have brand new iPhone on 2.30.03 then you have bootloader 5.09. This instruction works only if you have bootloader 5.08, so all you can do is wait till pHaseBanDowngrader for 5.09 come out. Take care

  • Santiago37

    Hey lori then you have a 5.09 bootloader this is why it doesnt work, sorry bro all u have to do is wait

  • Santiago37

    Arty sorry men, there is not way to unlock 02.30.03 all u can do is just jailbreak it and wait till dev team unlock the baseband 02.30, im waiting 2.

  • Pining Gercia

    SSH means Secure Shell.. It is a program to log into another computer over a network, to execute commands in a remote machine, and to move files from one machine to another. It provides strong authentication and secure communications over unsecure channels.

  • Dave68

    3GBBD didn’t – work – ‘…unsucessful. You Fail!” it says, and the terminal suggestion fails as well – I run the app, and somewhere it asks for a language selection, and the it aasks to confirm atleast twice, but as it is scrolling I see “Permission denied” or something to that effect – So I must be at 5.9 – I think you only have to do the “chmod 755 phasebanddowngrader” thingy once. I tried a second time and got “permission denied” or something…BTW tried this from a desktop terminal, and it drops the ssh connection just as it asks for the language preference…Can’t type nothing – it hangs.

  • Mike

    do the all steps but when ur oing to give the last step “./phasebandowngrader”.wait and give this command

    “chmod 755 phasebandowngrader”
    then give “./phasebandowngrader”
    THIS WORKS THANK GOD ITS WORKING FOR ME!

  • Raul Aragon

    all the files need 777 permisssions, then when you copy the file to the iphone select all and then right clic on files and go to properties and change the permissions files.

    you need the OPENSSH in your iphone and WinSCP installed in your pc for to do this.
    best regards

  • dave68

    Addendum – As my eyelids were at 1/2 mast at 3AM, I gave up after the plethora of errors I was getting, and shut ‘er down for the night. I checked my Baseband in the AM and ‘lo and behold it is at 2.29.XX (?) I still cannot unlock it tho…WIP. :)

  • Japheth

    If you already jailbroke your iphone via quickpwn then dont worry. Go to cydia and make sure youve updated if requested. Once that is done go back into cydia and look applications, the one you need is at the bottom of the page and its called fuzzyband downgrade, install this app wait for it to finish. You have successfully downgraded your base band to 2.28. restart your phone. if you havnt already go into cydia and download yellowsn0w…once that is done your phone will work with any gsm network!!! Trust me this works!

  • Mallkon

    thanks. It worked for me… :)

  • John

    Sorry…. but if you do not know what SSH is, you should probably not jailbreak your phone in the first place :)

    As mentioned in an above comment, if you get the “Denied” message (as I did as well) CHMOD the phasebandowngrade with permissions of 755

  • duclv

    I did this, and it’s worked:

    cd /Applications/phasebandowngrader/
    chmod 755 phasebandowngrader
    then give “./phasebandowngrader

  • duclv

    but my modem firmware is still 02.30.03

  • meezo

    hey guys
    have a 3G 2.2.1 baseband 2.30.0 bootloader 5.09
    any new updates on unlocking possibility
    please update me
    cheers

  • xean

    if your iphone running in 2.2.1 baseband 2.30.03 bootloader 5.09 YOU DONT HAVE ANY CHANCE TO UNLOCK IT BY SOFTWARE! BECOZ THE DEV TEAM UNLOCKERS ARE ALREADY PAID BY APPLE! so no chance to unlock it by software but you can jailbreak it. so if you want to unlock it. just look for any simcard that unlocks your operator sim…

  • Ahamed

    hey guys! how do i check whats the bootloader of my iphone3G is??
    thanks

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