Check your BIOS version from Linux

dmidecode reads the DMI/SMBIOS table to report the exact BIOS version and board model — the values you compare against the vendor's update page.

LinuxbiosfirmwaredmidecodeMedium risk

Run `sudo dmidecode -s bios-version`; pair with `sudo dmidecode -t baseboard` for the exact motherboard model to search for updates.

01Command

Command

$ sudo dmidecode -s bios-version && sudo dmidecode -t baseboard

02What it does

Before updating firmware with fwupd or the vendor's installer you need to know what version you already run. dmidecode answers this reliably, and `dmidecode -t memory` additionally lists every RAM slot's size, speed and form factor.

03Risk

RiskMedium risk

Requirementsdmidecode package; root required

!Warning: Values come from the firmware table and cannot be changed by software; on rare buggy firmware they can be incomplete.

04Undo

Undo

$ null

05Sources

dmidecode(8) — DMI table dumper
Debian · community · 2026-09-17
Evidence: -s bios-version and -t baseboard extract DMI fields
Kernel admin guide
kernel.org · community · 2026-09-17
Evidence: background for firmware-related troubleshooting

Last verified: 2026-09-18 · Category: System & Settings