These steps are not for 3GS users, it can only be possible for iPhone OS 3.1.3 with 05.12.01 baseband and older bootloader 05.08. Fuzzyband supports iPhone 3.1.3 to downgrade your 05.12.01 baseband to the older 04.26.08 which you have accidentally upgraded it.
Step1: To downgrade your baseband from 05.12.01 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1.3 by using any of one these guides: Redsn0w 0.9.4, Sn0wbreeze 1.5, Pwnage 3.1.5
Step2:After you have jailbroken your iPhone, Go to “Cydia” on your iPhone and Search for “Fuzzyband” and then install this application.
Step3:Start “Fuzzyband” app and touch on “Downgrade” button to downgrade your Baseband from 05.12.01 to 04.26.08.
Step4:You should now be able to perfectly unlock your iPhone 3G using the latest version of Sn0wbreeze 1.5 by following the step by step guide posted in my Next Blog.
Step1: To downgrade your baseband from 05.12.01 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1.3 by using any of one these guides: Redsn0w 0.9.4, Sn0wbreeze 1.5, Pwnage 3.1.5
Step2:After you have jailbroken your iPhone, Go to “Cydia” on your iPhone and Search for “Fuzzyband” and then install this application.
Step3:Start “Fuzzyband” app and touch on “Downgrade” button to downgrade your Baseband from 05.12.01 to 04.26.08.
Step4:You should now be able to perfectly unlock your iPhone 3G using the latest version of Sn0wbreeze 1.5 by following the step by step guide posted in my Next Blog.
