I have the same issue with the USB port on my Toyota C-HR 2017. The issue is that the system doesn't recognize only a few types of USB devices, which is a total non-sense.
I have tried to use USB v.1, 2 and 3 and even my old iTouch doesn't work on it.
My local dealer managed to update my navigational system using USB dongle of their own and told me, that Toyota doesn't support all brands, which for Toyota in the 21st century is a bit odd.
Please provide me with an advice, how to overcome this nasty situation as Toyota most likely won't upgrade the USB.
Thanks in advance!