unit: 3G
FW: 4.2.1
baseband: 6.15

forgive me if this question will be repeat. i'm just running out of time for this unit.

i follow all the steps in jailbreaking and unlocking for iphone 3G, but after installation of ultrasnow reboot twice wait for more that 2hrs, the unit is still no service.

jailbreak by CFW created via snowbreeze and repeated for nth times.

please i need some help ASAP.