BIOS update type American Megatrends Inc.

BIOS update type American Megatrends Inc.

Despite the large number of motherboards in production, there are few BIOS chip vendors for them. One of the most popular is American Megatrends Incorporated, better known by the acronym AMI. Today we want to tell you how you should update this type of BIOS.

AMI BIOS update

Before we begin to describe the procedure, let us make an important point: updating the BIOS is necessary only in exceptional cases. These are described below in the following article.

More information: When you need to update the BIOS

Now let's go directly to the manual. Note that it is intended for desktop PC owners, while laptop owners are advised to study the manuals separately.

Lesson: Updating the BIOS on ASUS, Acer, Lenovo and HP Laptops

Step 1: Determine your motherboard type and firmware version

An important nuance to know before updating the system software is that it is not the type of BIOS, but the manufacturer of the motherboard that plays a determining role. Therefore, the first step is to determine the model of the "motherboard", as well as the firmware version already installed on it. The easiest option is to use a program to determine your computer's hardware. One of the best solutions is AIDA64.

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Download AIDA64.

  1. Download the test distribution of the program and install it on your computer, then run it from the shortcut on the "Desk"..
  2. On the main tab, click "System Dashboard.".

    Repeat the action in the next window.

  3. Note section "System Board Properties." - On the line "System Dashboard." the exact name of the model is written.

    Scroll down the block introductions "System board data" - this will contain the links we need to update the BIOS. They will be useful for the next step.

Step 2: Download the updates

The most important step is to download the appropriate updates.

As a reminder, the AMI BIOS itself doesn't matter, but the manufacturer, model range, and motherboard revision does.

  1. Open your browser and use the AIDA64 links from the previous step, or go to your board manufacturer's website yourself.
  2. Find the device support page and look for the items that have the words "BIOS" o "Firmware". It is in these sections where you will find the firmware updates of the board.
  3. Find the latest firmware version and download it to your computer.

Keep in mind. Many variants of AMI BIOS do not support cumulative updates: it is not recommended to install version 1.4 to BIOS 1.0 if versions 1.2, 1.3, etc. exist!

Step 3: Install the updates

Direct installation of the new BIOS can be done in several ways. It is not possible to cover them all in one article, so we are going to focus on the DOS shell installation option.

  1. Before starting the procedure, it is advisable to prepare the support. Take a suitable flash drive, up to 4GB in size, and format it with the FAT32 file system. Next, copy the firmware files to it, and then remove the media.

    Read more: How to format a USB flash drive

  2. Go to BIOS and select boot from flash drive.

    Read more: Configure BIOS to boot from USB flash drive

  3. Turn off your computer, plug in the USB stick, and turn it on again. The shell interface will appear.
  4. Enter the following commands to select the root directory (remember to press I went into after each one):

    fs0: cd EFIBOOT

  5. Then enter a command ls to display the file list. Find in it the firmware file and the firmware utility (the names will be different for each AMI BIOS variant!).
  6. Then enter a command of the following type:

    *имя утилиты-прошивальщика* *имя файла прошивки* /b /p /n /r

  7. Wait for the procedure to finish (it shouldn't take long), shut down your computer, and unplug the flash drive from your computer. Start BIOS and check your version - if done correctly, the updated version will be installed.


The AMI BIOS update procedure has its own peculiarities, as it is different for each of the vendor's variants.

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