Any of the firmware revisions I have downloaded and attempted to use that are newer than revision 380.64_2 seem to create issues with discovering devices on my network. Normally I can detect all Chromecast devices, computers, TV's, my NAS, just fine and instantly with my phone and PC. With the newer firmware revisions it takes ages to see any of my three Chromecast devices, TVs, etc. They randomly appear at times and drop off. Sometimes I am unable to see them on my network at all. I had to go back to revision 380.64_2 since that does not create any of these issues.