hello, i am new here so i hope im at the right place. i have problem with activation my iphone 3gs after update at 5.1.1. long time ago i have done jailbreak and unlock of my iphone, so it was version 4.2.1. with baseband 6.15. now i tried to reboot iphone to the manufactured settings so i can put all over, update to 5.1.1. , jailbreak and unlock. this is what i did: i download 5.1.1 (3GS): iPhone2,1_5.1.1_9B206_Restore.ipsw from this page http://www.ijailbreak.com/iphone/where-to-download-iphone-firmware-restore-links/. i connected iphone with itunes and press shift+reboot, and choose file i have download earlier. after it proceed my phone was unable to activate. i have tried with itunes, without itunes, restart and turn off my phone, with original sim card from store where i bought the phone.. and nothing. so i run iphone in dfu mode and open in itunes and tried to reboot over again, but this time without holding button "shift". so after it proceed front page at my device is changed like it has updated to 5.1.1, but still i cant do nothing with activation. i cant open my phone or itunes. can you please help??? i have new bootrom , but the phone is from 2009 year. sorry for big text but i tried to explain details about problems, any solution please?