iPhone 3G Downgrade Baseband 05.11.07 to 04.26.08 Firmware 3.1
 

In response to my previous post of unlocking iPhone 3G, 2G on OS 3.1, I had few people who had broken Rule no.1 (which says that don’t upgrade to OS 3.1 from iTunes) set by Dev Team. For those, here is a solution, downgrade the Baseband.
Pre-requisite: To downgrade your baseband from 05.11.07 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1 by following guide unlocking iPhone 3G, 2G on OS 3.1.
Step 1: Go to “Cydia” and Search for “Fuzzyband” and then install it.
Step 2: Start Fuzzyboard app and click on Downgrade button to start downgrading your Baseband from 05.11.07 to 04.26.08.http://hydtech.files.wordpress.com/2009/08/3119861.jpg


Step 4: Now, your iPhone 3G is having an unlockable baseband. Now proceed with Unlocking with Ultrasn0w.

NOTE: Downgrading of baseband will only work on phones that have the 05.08 (5.8) Bootloader. If you do not know your bootloader, run Fuzzyband and it will report the version to you.
Feel free to follow me on twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.

good info thanks man !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

Is this working perfect?Can any boby tested practically?

yap Nice info ,,,,,,,,,,let me test it and i will post the result if positive.......

Not working this will work with 05.08 bl only

i test it but not work evry day -no service-;;,

sir can u help me how to jail break this version 3.1 and install cyindia installer ?

not supported for this version
it work only with 05.08 modem

not supported for 05.08

95% dont have 5.08 bl, only lucky people can do it

yes brother ru 1000% righteeeeeeeeeeeeeee
 

yes brother ru 1000% righteeeeeeeeeeeeeee


com999:(:(:(

i Test it But no service

tnxs to you my iphone its working perfect \:d/:D:eek: my modem was 5.11 and now is 4.26 ,bootloader 5.08 any way tnx again

is that window version?????????????