ASUS BIOS update: download, install, update using utility

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To update the BIOS on an ASUS laptop, open MyASUS, click System Update, select BIOS Update for Windows and restart when prompted.

This guide covers the MyASUS app route, the BIOS Update for Windows utility from the ASUS support site, EZ Flash 3 for laptops and motherboards, and what to do when an update is interrupted.

ASUS BIOS Update: Download, Install, Update using utility
Open MyASUS and select System Update in the left pane to check for a new BIOS for your ASUS laptop. (Image: ASUS)

Update ASUS BIOS with MyASUS on Windows 11

Keep the AC adapter plugged in and save your work before you start. Have your BitLocker recovery key ready, because Windows can ask for it after a BIOS update.

  1. Type MyASUS in the Windows search box and open the app.
  2. Click System Update. If the tab is missing, your model does not support this route; use the support-site utility below.
  3. Select BIOS Update for Windows or BIOS Installer for Windows, then click Update Selected Items.
  4. Review the details and click Confirm to download the file.
  5. Click Restart when the download finishes.
  6. On the UEFI screen, select Yes or Confirm and wait for the update to finish.
  7. Click Ok or Confirm to return to Windows.
Update ASUS BIOS with MyASUS by ticking BIOS Update for Windows
BIOS Update for Windows sits under Optional Updates; tick it, then select Update selected items. (Image: ASUS)

ASUS BIOS update tool options compared

Your situation Use this Needs a USB drive?
ASUS laptop with MyASUS installed MyASUS System Update No
ASUS laptop without the System Update tab BIOS Update for Windows from the ASUS support site No
Laptop that cannot update in Windows ASUS Firmware Update / EZ Flash 3 in the BIOS Yes, FAT32
ASUS desktop motherboard EZ Flash 3 from the BIOS Tools page Yes, FAT16 or FAT32
Newer laptop platforms (Intel Arrow Lake, AMD Krackan Point and later) Cloud Update inside the BIOS No, needs a network connection

ASUS BIOS Update utility for Windows computers

ASUS calls its Windows flashing tool BIOS Update for Windows or BIOS Installer for Windows. It is the way to install an ASUS BIOS update without a USB drive when MyASUS does not offer it.

  1. Open the ASUS support site, search for your exact model name and open Driver & Utility.
  2. Under the BIOS Update(Windows) category, find BIOS Update for Windows or BIOS Installer for Windows and click Download.
  3. If the file is a zip, right-click it and select Extract All.
  4. Double-click the BIOS Update application.
  5. Click Next, check I accept the agreement and click Next again.
  6. Select Yes, restart the computer now, then click Finish.
  7. Confirm the update on the UEFI screen and wait until Windows loads again.

Check Settings > System > About > System type first. These packages are for x86/x64 PCs; ARM laptops use a separate BSP package.

ASUS BIOS Update utility confirmation dialog before the update starts
Read the warning and select Confirm; the PC must restart to finish the BIOS update in UEFI. (Image: ASUS)

Update ASUS laptop BIOS with EZ Flash

Use this route when the Windows utility is not listed for your model. You need a USB drive formatted as FAT32.

  1. Download the BIOS file from the BIOS category on your model's support page, extract it and copy it to the USB drive.
  2. Shut down the laptop, hold F2, press the power button, and release F2 when the BIOS screen appears.
  3. Press F7 to open Advanced Mode, then open the Advanced screen.
  4. Select ASUS Firmware Update (some models show ASUS EZ Flash 3 Utility).
  5. Choose the USB drive and the BIOS file.
  6. Select Yes to proceed, then Yes again to confirm the file details.
  7. Wait for the laptop to restart into Windows on its own.
Update ASUS laptop BIOS with EZ Flash from Advanced, ASUS Firmware Update
In the Advanced tab of UEFI, select ASUS Firmware Update and keep the laptop powered throughout. (Image: ASUS)

How to update BIOS on an ASUS motherboard

Desktop boards use EZ Flash 3 from the Tools page. Use a FAT16 or FAT32 USB drive of 1 GB or more.

  1. Download the BIOS for your exact board from the ASUS Download Center under Driver & Utility > BIOS & FIRMWARE.
  2. Unzip it onto the USB drive and confirm a .CAP file sits in the root folder.
  3. Plug the drive into the PC, restart and press Del at the ASUS logo.
  4. Press F7 for Advanced Mode and open the Tools page.
  5. Select ASUS EZ Flash 3 Utility, then pick the USB drive and the .CAP file.
  6. Confirm both prompts to start the flash.
  7. Click OK when the progress bar completes; the system reboots.
ASUS BIOS update file selected from a USB drive in ASUS Firmware Update
Pick the drive holding the downloaded BIOS file, then highlight the file whose name matches your model. (Image: ASUS)

Check the ASUS BIOS version after updating

  1. Press Win + R, type msinfo32 and press Enter.
  2. Read the BIOS Version/Date line in System Summary.
  3. Compare it with the newest version listed on your model's ASUS support page.

ASUS BIOS not updating: fixes

Accidentally turned off PC during BIOS update on Windows 11

An interrupted flash can leave the firmware incomplete, which ASUS warns can cause a boot failure.

  1. Plug in the AC adapter and power the PC on once.
  2. If it reaches the BIOS or Windows, run the same update method again from the start.
  3. If it shows no display or will not boot, stop and contact an ASUS service center.

System Update tab or BIOS Update for Windows is missing

Some models do not support updating the BIOS from Windows.

  1. Use the EZ Flash method above with a FAT32 USB drive.

EZ Flash rejects the file or the update will not start

The file is for another model, sits inside a folder, or is older than the installed BIOS. ASUS does not allow downgrading.

  1. Download the file again for your exact model.
  2. Extract it to the root of the USB drive.
  3. Check that its version is newer than the one shown in msinfo32.

PC unstable or asks for a BitLocker key after the update

Firmware changes reset settings and trigger BitLocker recovery.

  1. Enter the recovery key from your Microsoft account.
  2. For a motherboard, press Del at boot, press F5 to load optimized defaults and confirm with OK.
ASUS BIOS update in progress with a do not turn off warning
Interrupting the flash can leave the PC unable to boot, so wait for the progress bar to finish. (Image: ASUS)

ASUS BIOS update FAQ

Does ASUS have a BIOS update tool?

Yes. ASUS offers BIOS Update for Windows (also called BIOS Installer for Windows) through MyASUS and its support site, plus EZ Flash 3 built into the BIOS setup screen itself.

What is ASUS BIOS update?

It is a firmware package from ASUS that replaces the BIOS on your laptop or motherboard. Updates fix bugs, improve hardware compatibility and add support for newer components.

Can I update ASUS BIOS without USB?

Yes. MyASUS System Update and the BIOS Update for Windows utility flash the BIOS from Windows with no USB drive. Newer laptop platforms can also use Cloud Update inside the BIOS.

Does ASUS BIOS update automatically?

Not by default on every model. ASUS lists Windows Update as one delivery route for laptop BIOS updates, and MyASUS shows available updates, but you confirm the install yourself.

How do I update the BIOS on an ASUS motherboard?

Copy the .CAP file from the ASUS Download Center to a FAT32 USB drive, press Del at boot, press F7, open Tools and run ASUS EZ Flash 3 Utility.

How do I install an ASUS BIOS update?

On a laptop, open MyASUS, click System Update, select BIOS Update for Windows and click Update Selected Items. Restart when asked and confirm the update on the UEFI screen.

Can I downgrade the ASUS BIOS?

No. ASUS states that downgrading the BIOS version is not allowed on its laptops, so EZ Flash refuses a file older than the installed version.

Philip Celasco
Philip Celasco

Philip is a Texas-based technology writer and IT administrator at Techdows.com with more than 10 years of experience creating practical content for everyday users and professionals. He specializes in web browsers, particularly Chromium-based platforms such as Google Chrome, Microsoft Edge, Brave, and Opera. Through his work as an IT administrator, Philip has hands-on experience managing devices, configuring browser policies, troubleshooting software and network issues, and helping people resolve problems that affect productivity and security. His articles are based on practical testing and real-world technical experience. He covers browser settings, extensions, performance problems, privacy controls, security features, and Windows troubleshooting. Outside work, Philip enjoys the quieter side of life in Texas and stepping away from the screen when he can. He has two kids, two cats and loves to play golf with his mother during the weekends.

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