I tried both Factory Reset, and also changed HDMI port. It made no
difference. Chromecast HD in Developer Mode, Settings->Security does not
reveal the Unknown Apps option, so apps cannot be sideloaded.Looking at
this thread, it's clear that more than...
Trying to sideload .apk file with FileCommander. Developer Options IS
enabled. I go to Apps->Security, but "Install from Unknown Sources" is
missing. It's not grayed out - it's missing - so I can't enable it.
There are only 2 opts there, related to s...
