Question: How do I rotate the Hyperpixel screen

The hyperpixel screen can be rotated by editing the setting display_rotate in /boot/config.txt

This can be accessed with sudo nano /boot/config.txt

display_rotate=0 is the default

display_rotate=2 is upside down

I've read reports that this is done differently on the Pi 4 vs the Pi 3 (where I've just tested it and it definitely works) so please report back if it doesn't work (or if it does!)