Plugged in the M6 via USB cable. When I unplugged the cable it the M6 froze up on the USB "Update Music Library".
Now it's completely unresponsive. Any ideas on a reset or what?
i have had this problem also, after this i had to wait until the battery was empty, and it shut off by itself.
i think perhaps i could have done a reset, but i did not have the user manual with me, so i just waited and after that it worked again.