I found a very simple fix. I know this will sound silly. But i had the same exact problem not charging then some how it was fully charged after two days of just sitting on my desk but then it just wouldn't sync, so after trying everything apple suggested with no luck the thought of those old nintendo cartridges came to mind.. I thought ha wouldn't hurt to try.. So I blow into the connection port of the ipod.. Then i plugged it in and it worked. I was blown away man But it worked! :) I'm syncing my Nano as I'm typing this. Try it, Good Luck.