Thanks for your suggestions. I have already tried different names for the USB key with the same result. I will try formatting with Windows, but I am not optimistic. Yes, I am in Canada so I would appreciate feedback from other Canadian Ioniq Electric owners. The car is able to detect music files without issue, but refuses to detect video files. Hopefully the next firmware update will resolve the issue. Thanks anywaysI honestly don't know either! Did I read you are in Canada? I wonder if video playback is disabled due to legal requirements there, is anyone else on here in Canada who can confirm it works?
Other than that all I can suggest is change the name of the Usb stick from USBDATA to something else, or try a different USB stick.
I see you are using Linux, maybe try formatting the stick in Windows.
I can't see that either of the above would logically make any difference,
but maybe the name "USBDATA" has confuses the cars system so it is expecting something else?