GUYs
i recently got the 5th generation ipod nano close
its has a action controller 2025 and 16gigs tried to do everything in the site and plenty of others nothing works
i believe i got it working now
no FORMAT ERRORS or disk errors
this is how it got done.
using CHECK FLASH thanks to
frozensoda
but instead of creating partitions simply delete everything there no partitions are required
when asked to disconnect after writing the changes then simply unplug and press okay
now connect u should have the disk being recognized as a flash drive format using the OS' Format utility Select "FAT32"..
disconnect after the format and reconnect the player should show the the memory on its screen
One big thing i noticed this player has a problem with playing anything higher than 160Kbps..
I converted all the mp3 to 128Kbps just to be safe .. YUP the same files are playing like a charm.

spent a week on this shit..
Hope this helps u guys TOO..
cheers