USB HDD not refreshing
I too was having this problem (the renaming doesn't work as the TV gives an ID to the device itself (not based on name)). I could even see sub-folders that I had deleted. But I did find a solution (simple) that worked for me. I simply went up to the menu and navigated from Video to Pictures and could immediately see the folders I had deleted were no longer there. I then navigated back to Video and hey presto it had refreshed. It worked for me anyway so I can see and watch all the new films I had put on the HDD. Hope this helps someone else.