Edit: Only noticed this was originally a post from 2010 lol. Will leave the information below incase it comes up in a search.
Hey, don't know much about jailbreaks these days, but I remember there was tethered and untethered jailbreaks, if it's tethered, use the same software you used to jailbreak it to get it past the apple logo. But if it's nothing to do with that, and I'm not sure if this will work or not for you, only done it on an iPod Touch 4G on iOS6, for me this method fixed a Recovery loop, but can also be used to backup any files and put them on your computer if everything goes well, or if that's even a thing you want to do. Not sure if you're on PC or Mac, I've only done this on a PC myself, but I'm sure there is Mac versions or alternative software.