@Paul-Chidley Onion Omega2
RST pin is an active Low input for hardware reset
The datasheet of Omega2’s SoC can be found here: Mediatek MT7688 Datasheet
FW RST pin is an active High input for software reset
See also in the official Onion Omega2 Documentation Onion Omega2
See also RESET BUTTON in descriptions of various Onion's Docks.