I've installed 8.1.0 all seems to be good except LED patterns, some work, others like fast rewind and the shutting down red pattern do not, all of the .png patterns seem to be present in /usr/share/kodi/addons/service.slice/resources/media/ledpatterns/ although I thought they used to be in /usr/share/kodi/media/ledpatterns ?
The location of LED patterns has changed because they are now part of the embedded slice.service add-on. I saw some LED issues when I first updated to early versions of the 8.1.0 image where patterns weren't playing right, but I strongly suspect that was due to an install that had became messed-up from testing and with too much background stuff going on (and using WIFI, which seems to make the Slice box suck). Since I clean reinstalled to the eMMC for boot testing and went back to Ethernet, it's been fine.