I just updated to the third beta of iOS 10 this morning, and I am receiving a “Tuner Not Available” error on my iPhone 6s Plus, iPad Pro 9.7, and iPad Pro 12.9. I rescanned for tuners on each device, and no change. It isn’t an issue with my HDHomerun Prime since my Apple TV Channels app works perfectly.
I appreciate the hard work you guys are doing! I can’t wait to see what is in store next. Thanks.