How to update a laptop’s UEFI (BIOS) (using ASUS as an example). Flashing with EZ Flash Utility

ASUS BIOS UpdateGood time!

Today there is a rather narrow topic on the agenda (// BIOS / UEFI update), and this applies only to users of Asus laptops (although the process him -even is similar on other devices).

In general, this should (mostly) be done relatively infrequently (if so, then usually no more than 1-2 times over the lifetime of the device). For example, when the manufacturer has fixed serious bugs in the new version or added new features.

Currently there are 2 wayshow to update (firmware) UEFI / BIOS: 1. by special. a utility directly under Windows (a practical option, but not always available); 2. using a pre-prepared USB stick (from which we will have to manually specify the firmware file in UEFI / BIOS).

Below I will look at both options in a bit more detail… 😉


📌 To note:

  1. keep in mind that the UEFI (BIOS) update procedure can sometimes end up in a repair shop (for example, some users make mistakes and download the wrong firmware versions…). Therefore, you should update it only when necessary!
  2. far from always being the most recent firmware is the most stable!
  3. self-flashing of the device may result in denial of warranty service (see warranty conditions).


The content of the article

Firmware / UEFI update: what to do step by step

Method 1

If you have “native” software preinstalled on your laptop, then in the utility MyASUS (check the boot menu) there is a special chapter “Customer Support / Live Updates…” (see screenshot below). 👇

It helps you quickly find the latest software, drivers, and BIOS.

👉 Not all devices support the utility MyASUS (if you don’t have one, go to the second option, see below).

👉 It should be noted that I would always recommend performing the BIOS (UEFI) update process from a bootable USB flash drive (in my opinion it is safer // At least create such a flash drive by writing multiple firmware versions to it, so that in case something happens – you can use it!).

MyAsus - device is updated!

MyAsus – device is updated!


Method 2


First you need to determine the model of your laptop. You can do this in several ways…


📌 Option 1: run 👉 command line, enter system information and press Enter.

Then, among the long list of properties and characteristics, find the line “System Model” (actually, we only need an abbreviation like “TP420UA”, see the example below 👇).

CMD - system template

CMD – system template


📌 Option 2: if you have all the “factory” software from Asus pre-installed, find the “MyASUS” utility in the START menu and run it. Then open the tab “System Information” – there must be a device model …

MyASUS App - System Information

MyASUS App – System Information


📌 Option 3: you can just check the documents that came with the laptop. 😉 See also one of my old notes on this subject to help you.



Official Asus Website (Drivers and Software Download Center):


Then you need to go to the official. Asus website and enter the model in the search bar (I provided a link to the download center, where also enter the abbreviation – see screenshot below 👇).

Search on the Asus site (screenshot from the official site)

Search on the Asus site (screenshot from the official site)

After that you should see a list of UEFI (BIOS) firmware – download the latest ones (I recommend downloading multiple versions at once if available)!

📌 Important: do not download firmware for your device! If you reflash with the wrong firmware, the laptop may not turn on afterwards… (of course, you can’t do without a workshop…).

Look at the date and download

Look at the date and download

📌 Important point: As a rule, the required firmware is newer than the one you have installed on the device. To find out the current firmware version on the device, try typing wmic bios get SMBIOSBIOSVersion (see example below). 👇

If you enter UEFI (BIOS) – you can also find out their version in the menu.

wmic bios get SMBIOSBIOSVersion

wmic bios get SMBIOSBIOSVersion



Then you need to extract the firmware file from the archive and write it to a regular USB flash drive. (To help: how to unzip RAR, 7Z, ZIP and other archives)

Copy the firmware file to a FAT32 flash drive

Copy the firmware file to a flash drive



the next moment: you need to check the battery charge level of the laptop (it is advisable to perform the procedure charging at least 30% and being connected with a power cable).

To note.: the fact is that on some devices there is a limitation that will not allow you to update the BIOS if the battery is low!

Charge the battery

Charge the battery


📌 In factFurther away:

  1. disconnect everything from the laptop, except for the AC adapter and the “our prepared” flash drive;
  2. turn off / restart the device;
  3. go to UEFI (BIOS): on Asus laptops, just hold down the button Esc front switch on the device. See also the instructions, the link to which I give below. 👇


👉 To help!

How to enter BIOS (UEFI) on an ASUS laptop – [см. инструкцию]



In UEFI (BIOS), you need to open Advanced Mode – Advanced Mode (key F7).

Then go to the tab “Advanced” and run the utility ASUS EZ Flash Utility 3.

EZ Flash Utility - Advanced Mode

EZ Flash Utility – Advanced Mode

The utility will display all connected removable drives: you need to open our prepared flash drive, point to the firmware file on it and press Enter. Then the utility will ask you to confirm the operation… 👌

📌 Important: during the BIOS update process itself – I recommend doing nothing with the laptop: do not connect any devices, press any keys, turn off the power, etc.

If you correctly chose the firmware and “did not interfere” with the device, then after 3-4 minutes. the process will be complete, the laptop will reboot and be ready to go! 👌

Select firmware from flash drive and confirm firmware working

Select firmware from flash drive and confirm firmware working


Additions on the topic – will be very helpful (comments are open!)

All my wishes!


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