I formatted an 8 GB flashdrive as MSDOS (FAT) on my Mac.
I went to a YouTube Video and copied the link.
I went to http://www.onlinevideoconverter.com/
and had this site convert the link to mp4.
I downloaded the resulting mp4 and copied it to my flashdrive.
I plugged the flashdrive into my Bolt EV and violå it played when selecting the proper items in Gallery.
I did note that my Software Upgrade preferences did NOT allow for automatic software upgrades. I could not determine what version I have, as the screen with software versions, has so much information, I could not scroll slow enough to read it properly.