@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.