I followed this guide: http://www.hackint0sh.org/forum/showthread.php?t=6575, but after have turned off the iPhone and then turned it back on only the Apple logo was showing. When I connected the iPhone to iTunes it synced like nothing was wrong also cyberduck was apple to connect to the iPhone. I was lucky to have a backup of the original springboard file, so i could fix it. Now i wonder why i can't see the main menu when the new springboard file (the one wich should do the carrier logo fix) is installed on the iPhone? Any ideas?