i bought my 5.5G last year. i dont remember which the last version i had on it before the update, but i believe i have never updated it before. i used to sync it with the library on my mac pro, although not very often - probably once a month, since i dont have that much new contents. since i am selling the MP, i set it to manual mode so that i can plug it to my MBP without its contents being deleted. this morning when i pluged it in, iTunes told me there's a new firmware available, so i updated it. after that, it works fine, except that the computer won't recognize it anymore. any idea? if it's broken, wuold Apple repair/replace it?