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.
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.
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twitter to keep yourself updated on all the latest jailbreaking and unlocking releases.