How to Check If Your BIOS Is Up to Date

Your BIOS is the firmware that runs before your operating system even loads. It initializes your hardware, manages boot sequences, and acts as the bridge between your software and your physical components. Keeping it current matters — but so does knowing when and how to check it safely.

What the BIOS Version Actually Tells You

Every BIOS installation has a version string and a release date. Together, these tell you which firmware revision your motherboard is running. Manufacturers release updates to fix hardware bugs, improve compatibility with new CPUs or RAM, patch security vulnerabilities (like Spectre-related mitigations), and add support for newer operating systems.

Knowing your current version is the first step. Comparing it against the manufacturer's latest release is the second.

How to Find Your Current BIOS Version

There are several reliable ways to check — no disassembly required.

Method 1: System Information (Windows)

1. Press Windows + R, type msinfo32, and hit Enter
2. Look for BIOS Version/Date in the System Summary panel

This shows both the version number and the date it was compiled — typically formatted like American Megatrends Inc. F.xx, MM/DD/YYYY.

Method 2: Command Prompt or PowerShell

Open Command Prompt and run:

wmic bios get smbiosbiosversion 

Or in PowerShell:

Get-WmiObject -Class Win32_BIOS | Select-Object SMBIOSBIOSVersion, ReleaseDate 

Both return your current BIOS version string directly.

Method 3: Inside the BIOS/UEFI Interface

Restart your machine and press the BIOS entry key during POST — typically Del, F2, F10, or Esc depending on your motherboard brand. Navigate to the main or system info screen. The version is almost always displayed here.

Method 4: On Linux

Open a terminal and run:

sudo dmidecode -s bios-version 

Or check:

sudo dmidecode -t bios 

This outputs version, vendor, and release date without requiring a reboot.

Method 5: On macOS (for EFI Firmware)

Mac users can check firmware via Apple menu → About This Mac → System Report → Hardware Overview. Look for Boot ROM Version. Apple ties firmware updates to macOS updates, so the process differs significantly from Windows PCs.

How to Find the Latest Available BIOS Version

Once you know what you have, you need to find what the manufacturer has released. 🔍

For desktop motherboards (ASUS, MSI, Gigabyte, ASRock): Go directly to the manufacturer's support site. Enter your exact motherboard model — usually found on the board itself or in your documentation — and navigate to the BIOS/Firmware download section. The latest version and its release date will be listed there, often with a changelog explaining what changed.

For branded laptops and pre-built PCs (Dell, HP, Lenovo, etc.): These manufacturers bundle BIOS updates with their own support software. Dell's SupportAssist, HP's Support Assistant, and Lenovo's System Update can all detect your system automatically and flag pending BIOS updates. You can also enter your device's serial number or model number on their support portals to pull up available downloads manually.

For Intel NUCs and similar compact systems: Intel maintains a dedicated driver and firmware download center. Your NUC's model number determines which BIOS packages apply.

Comparing Versions: What You're Actually Looking For

If the version numbers match (or your date is newer), you're current. If the manufacturer has released a newer version, you'll see a higher revision number or more recent date.

Read the changelog before updating. This is important. Some BIOS updates are critical security patches. Others add CPU support. Some fix obscure memory compatibility bugs that may not affect you at all. The changelog tells you whether the update is relevant to your situation.

Variables That Change the Calculation ⚙️

Not every user faces the same decision when a BIOS update is available.

Your hardware age matters. Older systems often receive fewer updates. A board that's been on the market for five years may have reached end-of-support, meaning the latest version listed is simply the last one — not necessarily recent.

Your stability matters. If your system is running without issues, a BIOS update carries some risk. BIOS flashing is low-level — a failed flash due to a power interruption or incompatible file can render a system unbootable. Many technicians follow the principle: if it isn't broken, evaluate carefully before updating.

Your CPU and RAM situation matters. If you've recently installed a new processor or are experiencing memory instability, a BIOS update may directly address your symptoms. Manufacturers frequently release microcode updates that improve CPU compatibility or fix RAM training issues.

Your OS and security posture matter. Running Windows 11 on older hardware, or working in environments where Spectre/Meltdown-class vulnerabilities are a concern, shifts the calculus toward staying current.

Laptop vs. desktop matters. On laptops, manufacturers often simplify the update process significantly — BIOS updates sometimes arrive through Windows Update or the manufacturer's support app. On custom-built desktops, you're managing this manually.

The Spectrum of Situations

A user running a two-year-old gaming desktop with a stable system, no new hardware, and no security concerns may check, find a newer version exists, read the changelog, and reasonably decide to wait.

A user who just installed a new CPU and is experiencing boot failures may find that the exact BIOS revision addressing that processor's microcode was released last month.

A corporate IT administrator managing fleets of laptops is likely operating with a standardized update policy that removes the individual judgment call entirely.

Someone who just bought a used desktop and has no idea how old the firmware is starts from a different place than someone who built their machine six months ago and has been tracking updates since.

The gap between "there's a newer version" and "I should install it" is filled entirely by your own hardware configuration, stability history, risk tolerance, and what the changelog actually says. 🖥️