IFD540/440 Touch Screen GPS/NAV/COM : Errors Loading Data Updates

I'm repeating what I did two days ago.

I may have one piece of additional info, though.  In my case, when I did the update 2 days ago, it appeared to go fine.  However, after it was complete, I think I left the USB stick in the bezel when the box power cycled, and without thinking I tapped the Aux rocker button toward the "Update" page again.  

Except the Update tab didn't appear; the screen went dark, and the IFD rebooted.

I didn't notice a problem right away, because it was Mar 4, and apparently my old data was still in place.  I flew my route that day, then was grounded for weather until today.  When I powered on the IFD today, it told me my data was out of data (it reported two things had expired on 3/5, but I don't remember now which two they were.)

I pulled my USB fob out and stuck it in my laptop, and saw the jillions of 1KB files in the directory as others have reported.

I reformatted the USB drive, called Jepp to get them to reset my account, redownloaded the data (actually only had to redownload the Nav data; charts and Obs data were still on the hard drive), recopied to the USB fob, and I'm reprogramming the IFD right now.

NOTE:  Two days ago, when I updated the USB fob with the 3/5 files, I looked at the directory before and after the Jepp data download, and it showed the same 4 files that were there from the first time I did an update.  Before the update, they all had the "Date Created" of Feb 15 and "Date Modified" of Feb 15--makes sense; that was my first-ever update.  After the Jepp download, all 4 files now had the "Date Modified" of 3/4/2015, also as expected.

It was while the fob was in the IFD that the directory changed from those 4 reasonable-looking files to the jillions of 1KB files.