You can now downgrade 3G Baseband from 02.30.03 to 02.28.00

15 Apr

You can now downgrade 3G Baseband from 02.30.03 to 02.28.00

Posted on 2009 under Firmware Versions, Pwnage Hacks, Unlock-JailBreak iPhone | 6 Comments

There seems to be some good news for iPhone 3G users who had upgraded their iPhone’s firmware to 2.2.1 sometime back and then couldnt unlock it back. The problem with 2.2.1 upgrade was that the baseband also got upgraded from 02.28.00 to 02.30.03 and with this baseband upgrade, iPhone 3G couldnt be used with any other SIM other than AT&T in US or Airtel/Vodafone in India.

Here is the good news – ModMyi is reporting that a tool called pHaseBanDowngrader has just been released allows iPhone 3G users to downgrade baseband from 02.30.03 to 02.28.00.

But this is not for iPhone Dummies, you got ot be a techie to downgrade your baseband. Here is how to downgrade:

Download pHaseBanDowngrader from this address
Connect via SSH to your iPhone
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”

NOTE OF CAUTION: 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 our own risk, but there is really no risk of doing any damage to your device unless you do something absurd.

If you hit any road block while doing this, check this thread on Modmyi.com.

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6 Comments so far »

by Downgrade iPhone 3G baseband from 02.30.03 to 02.28.00 | woikr, on April 15 2009 @ 2:59 pm

[...] [Via iPhoneIndia] [...]
by sandra, on April 29 2009 @ 9:41 pm

I had the following: 2.2 / 02.28.00 and sucessfully jailbreaked the device… Until incidently I upgraded the itunes. Now, I have 2.2.1 / 02.30.03. How can I get Itunes working now? Re-jailbreak? Remove Itunes completely and re-install? Pls. help
by Dung, on April 30 2009 @ 10:55 am

You just Open Cydia, then click on Selecion: All packages: you go down until you see and click 3G Baseband Downgrade, you install it, and confirm. Return to Cydia. YOu will see and click into : 3GBBD. Waiting until you see Successfully and Congratulations Downgrade your baseband. After that you install Yellowsn0w to unlock it. That’s it, now your Iphone 3G unlock now.
by kujtim, on May 1 2009 @ 6:24 pm

does not work with boot loader 5.9, which most iphones produced after september 2008 have. operation failed!
iphone/ 2.2.1 02.30.03
by Dev, on May 6 2009 @ 6:30 pm

Try to downgrade 2.30.03 to 2.38 with pH. open Cydia and download pH.
by Brick House, on June 8 2009 @ 3:50 am

Oh man – does anybody think there will ever be fix for 5.9??

Arrrgh – driving me nutz!!