V1.0.0

Commander X16 — Raspberry Pi 4

(Should work on a Pi3 but not tested)

Flash x16-appliance-r49.img.gz with Raspberry Pi Imager (Use custom image, and decline the customisation prompt). Or use Rufus. Any card 4 GB or larger. The first boot expands the card and takes an extra minute or so; after that it goes straight to the X16.

Your programs.
To add your programs, put the card in a PC and a drive named X16PI appears. Copy .PRG files into its x16 folder. (This folder is mapped into the EXT4 partition) On the X16: @CD:FAT-FILES, Copy your files to where ever or run them there.
(NOTE: A copy of the SD Card from Github is included in this build and I am sure other crap I forgot)

Wi-Fi
is optional — Ethernet works out of the box. Edit x16-wifi.conf on that same drive and fill in X16_WIFI_SSID, X16_WIFI_PSK, X16_WIFI_COUNTRY. The Pi restarts once, connects, then blanks the password from the file — that means it worked. The file x16-wifi-status.txt says what happened.

Full guide: README-end-user.md.