At the end I managed to update all BIOS of my machines by using the manifacturer original zip file.

Once extracted there are various files, fun part they changed the name of the main executable that had to be run via EFI with a less obviousy one and also added a FLASH.NSH file where .NSH are the EFI equivalents of .BAT in Windows and .SH in Linux.

So here's the procedure: unzip the ZIP content and put it in a flash drive, at the startup go in BIOS settings and select "Boot EFI shell", when the boot is complete go inside the flash drive content with cd fd0 or similar command where fd0 is your flash drive. At this point I first used the utility provided to do a backup copy of the current BIOS and then ran the FLASH.NSH file, then reboot and remove the external flash drive.

Answer from user3450548 on Stack Exchange
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Bios Mods
bios-mods.com › bios-recovery › ami-bios-recovery
Bios Mods -The Best BIOS Update and Modification Source: AMI BIOS Recovery
Only the BIOS file is needed. For AMI BIOS recovery, the floppy disk does not have to be bootable and no flash utility is required. This procedure is also applicable with USB drives on most newer systems that use AMI. IMPORTANT: If you have an HP BIOS and the recovery method above was unsuccessful, please rename the recovery BIOS to HPBIOS.ROM and try again.
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SOGGI
soggi.org › motherboards › bios-update-flash-utilities.htm
Motherboard BIOS Update/Flash Utilities - AMI | Award | Phoenix
The following utilities are recommended to update BIOSes with AMI core (.rom files). UEFI/Aptio 4/Aptio V are not supported, go to ami.com to download the appropriate flash tool.
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Wim's BIOS
wimsbios.com › biosupdates › ami.jsp
AMI BIOS Updates downloads for your motherboard • Wim's BIOS
Download your AMI motherboard BIOS updates for free here after identifying your AMI motherboard model with our extensive Award, AMI and Phoenix BIOS IDs
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AMI
ami.com › home › products › aptio v
Aptio V: The Future of BIOS Firmware - AMI
November 20, 2025 - The Software is made available for downloading solely for use by end users according to the License Agreement. Any reproduction or redistribution of the Software not in accordance with the License Agreement is expressly prohibited by law and ...
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Bios Mods
bios-mods.com › downloads
Bios Mods -The Best BIOS Update and Modification Source: Downloads
Better use recompiled and some bugs fixed version 1.25 beta awbdedit from – bios.rom.by/ROMutils/Award/awdbedit/re1_25.zip
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Minus Zero Degrees
minuszerodegrees.net › at_clone_bios › at_clone_bios.htm
Images of BIOS ROM's for Certain AT Clones
Images of BIOS ROM's for Certain AT Clones NOTE: Additional images at https://theretroweb.com/ NOTE: Additional images at http://chukaev.ru54.com/bios_en.htm
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Dell
dell.com › home › support home › product support › driver details
American Megatrends (AMI) Latitude ST System BIOS, A01 | Driver Details | Dell US
The File Download window appears. Click the Save button. The Save As window appears. Select Desktop using the drop-down menu to the right of Save in. Click the Save button. A progress meter moves as the download is completed. If necessary, click X in the upper right-hand corner of the Download Progress Window to close it upon completion. NOTE: Shut down all other applications prior to running the BIOS update utility.
Find elsewhere
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Win-Raid
winraid.level1techs.com › bios/uefi modding › bios modding guides and problems
[GUIDE] Flash AMI BIOS With Different ROM ID on ASUS Motherboard - BIOS Modding Guides and Problems - Win-Raid Forum
February 12, 2024 - There are very few scenarios where you need to flash firmware from a different model, nor do I recommend you do it, as 95% of the time it will result in a brick. Today, however, I needed to as part of another project I’m…
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BleepingComputer
bleepingcomputer.com › bleepingcomputer forums › hardware › internal hardware
(Solved) How to flash American Megatrends BIOS - Internal Hardware
1 week ago - As you can see, existing ROM ID is 'APX78052'. I'm guessing that this should read something else and that flash hasn't altered anything? Could be wrong. Edit: I've attached the custom flash file within .zip should anyone want a peek. ... Edited by shortswiss, 11 June 2018 - 06:29 PM. ... I guess BIOS flash with Vista via Virtual machine is out of the question.
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Protectli
kb.protectli.com › home › knowledge base › ami bios/uefi versions for the vault
AMI BIOS/UEFI Versions for the Vault - Protectli Knowledge Base
February 3, 2025 - This page has a table with all of the current versions of BIOS/UEFI for the Vault. BIOS can be downloaded from this table by clicking on the "Download Link" entry and used to upgrade the BIOS on the Vault.
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Ru54
chukaev.ru54.com › bios_en.htm
Motherboard BIOS collection
Revision: ??? CPU/FPU: N80286-12, P80C287 Chipset: Headland HT101A/B1A4924, HT102/B1A4000 (2) ICs: MC146818P, M5L8042-146P Memory: SIPP (4) Exp. slots: ISA-8 (1), ISA-16 (5) Id string: ??? BIOS: AMI ROM: 23C256-4096 (32k) File: 2hlm001h.bin MD5: b66609a6659b703461198f4cc9139750 ROM: 23C256-4095 (32k) File: 2hlm001l.bin MD5: cdba4118272aba8f6d7650cfa7e3499f Comment: - ==== 2hlm002.zip ======================================== Name: ???
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Google Groups
groups.google.com › g › dashbuilder-setup › c › 4p6yX7KwUUg
Ami Bios Rom File Download
November 26, 2023 - Download Zip https://t.co/Enl341N4Y7 Step 1: Identify your AMI BIOS version and modelThe first step is to identify your AMI BIOS version and model. You can do this by entering the BIOS setup menu during boot or by using a utility such as AMIDiag or CPU-Z. You will need this information to find the correct ROM file for your system.
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American Megatrends
ecomputerz.com › home › computer knowledge › american megatrends bios update
American Megatrends BIOS Update | A Safe, Step-by-Step Guide
BIOS Update By Command Prompt I update the American Megatrends BIOS using the following method:- 1. Get the correct BIOS .ROM File from the AMI web Site or my Computer provider's …
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Hugging Face
huggingface.co › spaces › icucXnerha › Movie-recommender-system › blob › main › data › Ami Bios Rom File Download.md
data/Ami Bios Rom File Download.md · icucXnerha/Movie-recommender-system at main
July 20, 2023 - You can find the ROM files on the official AMI website or on the website of your motherboard or system manufacturer. Make sure you download the correct file for your system and save it to a USB flash drive or another accessible location.
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Bios Mods
bios-mods.com › forum › Thread-AMI-BIOS-update-image-Assistance
AMI BIOS update image (Assistance)
September 11, 2018 - It's OK, I thought maybe you were reading BIOS update method on some manufacturer page, so I wanted to look hoping maybe I could find a download there. Please upload the bios.bin you have now, I will see what can be updated · Posts: 49 Threads: 2 Joined: Sep 2018 Reputation: 0 ... Hey, here it is. Attached Files bios.bin (Size: 512 KB / Downloads: 23)
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Altoscomputing
altoscomputing.com › filepic › oth › Altos_BrainSphere™_P10_F6_System_BIOS_-_EFI_Update_User_Manual.pdf pdf
[EFI Shell BIOS Update] 1. Go to AMI web site to download ...
tool”. https://www.ami.com/bios-uefi-utilities/. And put the AfuEfix64.efi to the · EFI folder. 2. Prepare a UEFI shell bootable USB drive. 3. Download Altos BIOS Package and copy files to the UEFI Shell bootable drive · 4. Power on System and press <Del> during POST LOGO to entry BIOS setup.
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AMI
ami.com › home
AMI - Trusted Leader in UEFI, BMC & Open-Source Firmware
September 29, 2025 - The Software is made available for downloading solely for use by end users according to the License Agreement. Any reproduction or redistribution of the Software not in accordance with the License Agreement is expressly prohibited by law and may result in severe civil and criminal penalties.
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MiniTool Partition Wizard
partitionwizard.com › home › partition manager › 2 ways to update american megatrends bios
2 Expert Guides to American Megatrends BIOS Update
September 29, 2025 - Download the AMI Firmware Utility Tool and unzip it. Go to the AFUWIN folder. Choose 32 bit or 64 bit. Run the AFUWIN.EXE. Click the Open Button to search for and select the BIOS file you downloaded from your motherboard manufacturers website.