Multiple ways: - through BIOS updates (so the motherboard OEM has to release a BIOS update for that model that includes newer microcode and you'd have to down

Multiple ways: - through BIOS updates (so the motherboard OEM has to release a BIOS update for that model that includes newer microcode and you'd have to download/apply the update) - through the OS: both Linux and Windows can and do load ucode at boot, depending on the version/configuration/etc