I had a problem doing the auto-update. It kept interrupting me to try, then failed each time. So I tried the “hold Power for 20 secs” trick. After that it said I needed to recover using the PC tool. So I downloaded it and tried it three times. It tells me on the PC to call the 1-866-SANDISK number.
I had a similar problem. I downloaded the program, put the thing in recovery mode and went to install the program. Turns out the recovery tool program does not work on 64-bit systems. I ended up returning it and getting a new one since you can’t take it out of recovery mode…brilliant.