Reply to the three kind souls who offered the "scroll down" advice. Turns out, there was no hint of the off-screen item, and I had to scroll past the giant "U

Reply to the three kind souls who offered the "scroll down" advice. Turns out, there was no hint of the off-screen item, and I had to scroll past the giant "UPDATE NOW" (to 8.5.1) button WITHOUT TOUCHING IT (sneaky!) and there it was! Thanks again.