I've bought a simil ipod nano from
www.saoxie.com , the price seemed to be very good for a 8 GB player. I received the player, a very good imitation but immediately I had problems with recording and deleting files. Searching for a newer firmware I've discovered this wonderful site and people with similar problems...
I have formatted the memory, a hacked memory of 256 MB and not 8GB! Now I'm trying to contact the seller but I've not received a reply yet. I suppose that all the ipods (1-2-4-8 GB) of this seller are just the same differently hacked. Please don't do my same mistake.