iPhone stuck in recovery mode with black screen

hi i was wondering if anyone could help me i have an iphone 3gs new bootrom stuck on a black screen when i try to boot with red sn0w it stays on the waiting to reboot screen forever i cant get anything to work on it. its just stuck in recovery mode and even when i try to recover with itunes i get eroor message 3194.

any help would be appretiated thanks in advanced.