"The Apple TV update couldn't be downloaded at this time" persistent error message
After a few months of inactivity, turned on Apple TV, but no longer connects to wifi... Apple TV recognizes wifi network (has a wifi address but no other network info). On selection of wifi network, immediately gives "There was a problem connecting to the network. The wifi password you entered is incorrect. Try again (-100)" with no chance to affirm or change password. Tried updating Apple TV software but got above error msg, have restarted cable modem, wifi router, Apple TV multiple times...
Apple TV