Downgrade 3G Baseband from 2.30 to 2.28 Now!!! No hardware Necessary!

[Vandam500]

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.

Note- So if you have the latest version 2.2.1 then you can software unlock your iPhone 3G

Download here:

http://www.mediafire.com/download.php?odikiuqfjji

Instructions:

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"

Good luck folks!!!! Post results here but have seen positive feedback ^_^

Source: http://www.modmyi.com/forums/iphone-news/575351-downgrade-3g-baseband-2-30-2-28-a.html

 

[fenderbass146]

no way thats great. Has anyone proved this works yet. Currently I am using a turbo sim, but before I sell it I might unlock it with this to raise the value of it.

 

[JoeHowes]

no luck

I cant get it to work...im not sure how to use terminal...how do you enter the command lines? is it one line or do you press enter after each line

 

[toxikos]

Only work on bootloader 5.8 not bootloader 5.9

 

[macdrew33]

Bootloader version

Just one question... I've read all the info I could dredge up, but apologize if I missed or can't remember something...

How do I know what bootloader version I have? so I can tell if this downgrade will work for me.

My iPhone 3G is on 2.2.1 with 02.30.03 and won't recognize my SIM. I read about how to fix that... and know the difficulties... this downgrade sounds like it would make life easier since I wouldn't have to get a SIM fix or piggyback SIM or whatever the extra little chip is called.

Thanks for any help.

 

[Tokiopop]

This is now available in Cydia, under the iClarified source. Happy downgrading and unlocking everyone

 

[Moi un Mouton]

Just one question... I've read all the info I could dredge up, but apologize if I missed or can't remember something...

How do I know what bootloader version I have? so I can tell if this downgrade will work for me.

My iPhone 3G is on 2.2.1 with 02.30.03 and won't recognize my SIM. I read about how to fix that... and know the difficulties... this downgrade sounds like it would make life easier since I wouldn't have to get a SIM fix or piggyback SIM or whatever the extra little chip is called.

Thanks for any help.

See this tutorial, you can find near the start a pointer to how you find your BL version:

http://www.iclarified.com/entry/index.php?enid=3583

 

[TheSpaz]

What about people who've upgraded to 3.0? Can we then downgrade to 2.2.1 and then downgrade the baseband too? Then we could have a fully functional 2.2.1 again.

 

[LePigeonBleu]

What about people who've upgraded to 3.0? Can we then downgrade to 2.2.1 and then downgrade the baseband too? Then we could have a fully functional 2.2.1 again.

i am interested in knowing too.

 

[still in school]

Sorry for the noob question but where can i get MobileTerminal from?

 

[koollectablz]

Sorry for the noob question but where can i get MobileTerminal from?

Cydia.

 

[CBR900RR]

This is now available in Cydia, under the iClarified source. Happy downgrading and unlocking everyone

FYI, the file is call DownBB, just install it under cydia and you don't have to go thru SSH.

 

[still in school]

FYI, the file is call DownBB, just install it under cydia and you don't have to go thru SSH.

did it work for you? I tried DownBB at school and it wouldn't complete the download process. i might be blocked by the firewall at school.

 

[CBR900RR]

I am still on OS2.2 so I don't need any baseband downgrade.

 

[fabian9]

I am still on OS2.2 so I don't need any baseband downgrade.

haha congratulations?

how come you haven't updated to 2.2.1 yet? to be fair it made no difference at all to me... but still felt good to have the latest firmware installed. not sure i'll be quite as quick to upgrade to 3.0 though!

 

[jmann]

This is a good thing for all the whiners that updated to 2.2.1 before reading the dev team blog.

 

[CBR900RR]

haha congratulations?

how come you haven't updated to 2.2.1 yet? to be fair it made no difference at all to me... but still felt good to have the latest firmware installed. not sure i'll be quite as quick to upgrade to 3.0 though!

Because I have a better chance to sell my unlock iphone3g on craigslist and upgrade to the new iphone4g.

 

[dhlizard]

Sorry for the noob question but where can i get MobileTerminal from?

Go to post #7 and read the instructions by clicking the link.....

 

[iTouch]

Thanks! It works perfect after a couple of reboots. No more Turbo SIM and carrying a second phone or asking strangers to "borrow" their phone. I also lucked out and had that specific Bootloader.

 

[dhlizard]

Thanks! It works perfect after a couple of reboots. No more Turbo SIM and carrying a second phone or asking strangers to "borrow" their phone. I also lucked out and had that specific Bootloader.

Lucky you. I have 5.9 (5.09 whichever).

Maybe somebody will taclke that one next !

 

[Knowlege Bomb]

Is there any way to check your bootloader on the phone?

I'm at work and this would give me something to do...

 

[koollectablz]

Is there any way to check your bootloader on the phone?

I'm at work and this would give me something to do...

Follow the link in #7. You'll need to ssh into your phone but it works.

I had 5.09

 

[jmann]

Follow the link in #7. You'll need to ssh into your phone but it works.

I had 5.09

He meant from the phone. SSH would require a computer...

 

[koollectablz]

He meant from the phone. SSH would require a computer...

Sorry, I assumed he'd have a computer at work. Be good if the downgrader checked your loader version and just popped up a dialog if it was the wrong one.

Though I s'pose you could run the downgrader and if it doesn't work then you have the wrong bootloader - I did, but then felt the need to physically check as well.

 

[jmann]

Sorry, I assumed he'd have a computer at work. Be good if the downgrader checked your loader version and just popped up a dialog if it was the wrong one.

Though I s'pose you could run the downgrader and if it doesn't work then you have the wrong bootloader - I did, but then felt the need to physically check as well.

I think it should work like all the other cydia packages that are firmware dependant, where it does a check beforehand to verify you have the correct os.