Actualización de BIOS: así es como funciona

BIOS update – this is how it works

BIOS update - this is how it works


The BIOS / UEFI ensures that your operating system can even access the processor, RAM, and other hardware. And since this firmware runs under Windows, for example, an update is somewhat more complex than, for example, with driver or program updates.

How does the BIOS update work?

First of all, you need to be clear about what a BIOS / UEFI is and why both are constantly being mentioned. BIOS means Basic Input Output System and UEFI for Extensible Unified Firmware Interface. These are in each case the Computer firmwarei.e. the most basic software that actually does Allows access to hardware.. Without BIOS / UEFI there would simply be no connection between the hardware and, for example, Windows. All devices, from a printer to a reflex camera to a GPS logger, have such firmware. With the camera, you operate the device directly through this firmware, with computers it works more invisibly in the background, and works with Windows, Linux or macOS.

The BIOS is from the 70s, consists only of text and is operated with the keyboard. The UEFI successor offers a graphical user interface and can be operated with the mouse; otherwise, the differences in performance are not so great. And since BIOS has been established as a term, you often see the term UEFI-BIOS or just BIOS, even when referring to UEFI. and that’s how we do it here.

The important point now is: BIOS runs on Windows, so you can’t just double-click an exe file in Windows to load a new BIOS. Just as the Firefox browser cannot update Windows, Windows cannot update the BIOS. The BIOS has to do that by itself. Of course, the firmware does not run on the hard drive or RAM, but on one. Flash memory on motherboard ?? that is why there is also talk of sparkles. An MSI motherboard is used as an example, but the procedure also applies to other manufacturers.

Windows itself generates the model name on demand.


Important: find out your motherboard model

Updating a new BIOS is pretty easy and very reliable these days. But it can also block entire systems! The good thing about this: even if something goes wrong while flashing, it won’t affect the operating system or your data, and you can simply re-flash. Therefore, you have to do some preliminary work: on the one hand, you must make a backup of the system or the most important data beforehand. On the other, you need the exact Name of your motherboard discover.

If you’ve bought the computer out of the box, including Windows, chances are you already have one Motherboard Manufacturer Firmware Tool is it on the computer that spits out the exact name? and maybe it even offers BIOS updates, but more on that later. Alternatively, you can get the free CPU-Z, start it up, and switch to the “MotherboardThere you will find all the information you need about the board and the BIOS version installed, in this article we will explain step by step how you can get information about your motherboard with CPU-Z

If you have an invoice where the model is noted, don’t trust it! It is quite possible for a neat motherboard to upgrade with compiled computers without reference to a better / newer model. Alternatively, you can simply use the command “msinfo32.exe“Run” for whatever BIOS version is sufficient.

CPU-Z provides all the necessary information.


BIOS update directly in BIOS

With this information, you can now search for the correct BIOS version. All manufacturers offer corresponding downloads on their home pages.. Motherboard names often consist of endless and confusing collections of letters and numbers. The name must be exactly correct! You’ll usually find a ZIP file, often with just a readme text file and a file with a strange name and no file extension.


the Now copy the contents of the ZIP onto a USB data mediumregardless of whether it is a stick or a full hard drive. After restart the computer and enter BIOS. To do this, you have to press a certain key shortly after the computer starts up again. Can you read here which key you use to enter your computer’s BIOS? because there are differences from one manufacturer to another. However, a corresponding message is often displayed on the screen. From here, it doesn’t always continue straight away – in the case of MSI, you’ll find the upgrade option in the bottom left under “M-Flash“, With other manufacturers you have to find a suitable menu item.

The rest of the process is again very simple: select yours when prompted by the update tool USB data support and then the unzipped Firmware file. After that, all you have to do is wait; after a few minutes, the computer should start normally again. Very important: in this phase you must Do not shut down or restart the computer, That’s guaranteed to backfire!

In UEFI, the job is pretty straightforward.


Update via Windows wizard

Some manufacturers, like Asus, also offer Windows Tools for BIOS Update. In Asus, the software is called WinFlash and it basically has only one advantage: it can copy the BIOS currently installed on the device; however, there are usually older BIOS version downloads available in case you want to downgrade for some reason. WinFlash also downloads the BIOS image, but you have to find the WinFlash version that matches your motherboard, so you don’t save work.

Then you need Just start the tool and let it do its work: The computer restarts, the new BIOS is updated, the computer restarts with Windows. The path through such a Windows tool may seem a bit easier, but it ultimately only frees you from entering the BIOS and doing three or four clicks there. The advantage of the manual method: it almost always works and you learn to enter a BIOS. And there are all kinds of useful things to discover!

MSI helps at least to find updates.