Since I accidently upgrade my iphone to version 1.1.1.Then I do downgrading,activating,updating,jailbreaking, and unlocking. but at last my sim card still no active then I found my IMEI 004999010640000 is not my old IMEI.How should I do now?My Modem Firmware 04.01.13_G Version 10.2(i downgrade again) please help