gpg --import vendor.pubkey.asc gpg --verify maintop-5.3.tar.gz.sig maintop-5.3.tar.gz
From Start Menu → VIA → MainTop 5.3 . If a “Driver not found” error appears, reboot and launch again. maintop 5.3 download
(.INF file) for your machine board (e.g., Hoson, Senyang) within the MainTop printer setup menu Configuration: gpg --import vendor