ASUS PRIME B840M-A WIFI is a micro-ATX AM5 board built on AMD B840, taking Ryzen 9000, 8000 and 7000 desktop CPUs and four DDR5 DIMMs up to 256GB. Wireless is 2x2 Wi-Fi 6E with Bluetooth v5.3, video runs through two DisplayPort and one HDMI output, and a BIOS FlashBack button sits on the rear panel.
Product released: March 1, 2025
Latest firmware version
Version 1804, released September 21, 2026
Last checked for updates: Oct 31, 2026 18:14 UTC
What's new in version 1804
1. Update to AGESA ComboAM5 PI 1.3.0.1d.
2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation.
Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOSRenamer.
LatestUpdate has tracked 19 versions of ASUS PRIME B840M-A WIFI firmware, released between October 14, 2024 and September 21, 2026.
Version 1804 - September 21, 2026: 1. Update to AGESA ComboAM5 PI 1.3.0.1d. 2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency op…
Version 1686 - July 2, 2026: Updated AGESA ComboAM5 PI 1.3.0.1b Patch A to support the GNR Transparent Secure Memory Encryption (TSME) feature. Before running the USB BIOS Flashback tool,…
Version 1681 - June 22, 2026: 1.Update AGESA ComboAM5 PI 1.3.0.1b. 2.Add support for EXPO ULL memory profiles. 3.Optimize ECC-UDIMM memory performance.Before running the USB BIOS Flashback…
Version 1670 - April 29, 2026: New memory profile support. Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOSRenamer.
Version 1654 - April 20, 2026: • Update AGESA ComboAM5 PI 1.3.0.1. Note: This BIOS version cannot be rolled back to previous versions. Before running the USB BIOS Flashback tool, please rena…
Version 1644 - March 27, 2026: "1. AGESA updated to ComboAM5 PI_1.3.0.0a. 2. Provide additional stability margin during high-frequency DDR5 training. 3. Addresses potential boot failures and…
Version 1642 - February 26, 2026: 1. AGESA updated to ComboAM5 PI_1.3.0.0a. 2. Provide additional stability margin during high-frequency DDR5 training. 3. Addresses potential boot failures and…
Version 1627 - February 13, 2026: "1. AGESA updated to ComboAM5 PI_Pre1.3.0.0 for better security. 2. Enhanced system performance and stability. 3. Improved memory compatibility for JEDEC-compl…
Version 1403 - November 21, 2025: "1.AGESA updated to ComboAM5 PI 1.2.7.0. 2.Improves compatibility with various CPUs and devices. Note: This BIOS version cannot be rolled back to previous vers…
Version 1087 - October 21, 2025: Updated AGESA to ComboAM5 PI 1.2.0.3g. Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOSRenamer
Version 1081 - September 19, 2025: Improve system stability. Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOSRenamer.
Version 1078 - August 5, 2025: 1. Updated AGESA to ComboAM5 PI 1.2.0.3f. 2. Enhanced system performance, stability, device compatibility, and overclocking support. Before running the USB BIO…
Version 1063 - July 4, 2025: 1.Updated AGESA to ComboAM5 PI 1.2.0.3e for upcoming CPU compatibility. 2. Enhanced system performance and stability. 3. Important: This update is irreversible…
Version 1022 - March 7, 2025: 1. Enhanced system performance with support for 9950X3D and 9900X3D processors. 2. Included AI Cache Boost to enhance performance and compute power when using…
Version 1006 - February 11, 2025: 1.Updated AGESA to PI 1.2.0.3a Patch A. Please update the chipset driver to version 7.01.08.129 or newer to enhance gaming performance in select games. 2.Impro…
Version 1001 - January 16, 2025: 1.Updated AGESA to ComboAM5 PI 1.2.0.3. Please also update the chipset driver to version 7.01.08.129 or newer to enhance gaming performance for select games. 2…
Version 0825 - December 13, 2024: SHA256: ac4f305510b7b7787f55162d8ba24d2e5e0f9acb81119f557a2ba5b2b2bd3fde 1. Updated AMD AGESA to version 1.2.0.2b 2. Fixed a few fan-related bugs and improved…
Version 0816 - November 6, 2024: 1. Include Turbo Game Mode: Enhance performance in certain games. 2. Update AGESA Version to Combo AM5 PI 1.2.0.2a: Enhance compatibility and performance. Befo…
Version 0230 - October 14, 2024: First release Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOS Renamer.
Update prediction
A firmware update is expected soon, between October 10, 2026 and November 17, 2026.
ASUS typically releases firmware updates for this product approximately every 47 days.
ASUS PRIME B840M-A WIFI is a micro-ATX AM5 board built on AMD B840, taking Ryzen 9000, 8000 and 7000 desktop CPUs and four DDR5 DIMMs up to 256GB. Wireless is 2x2 Wi-Fi 6E with Bluetooth v5.3, video runs through two DisplayPort and one HDMI output, and a BIOS FlashBack button sits on the rear panel. It was originally released on March 1, 2025.
What is the latest firmware version of ASUS PRIME B840M-A WIFI?
The latest firmware version of ASUS PRIME B840M-A WIFI is 1804. It was released on September 21, 2026.
What changed in ASUS PRIME B840M-A WIFI firmware version 1804?
ASUS PRIME B840M-A WIFI firmware version 1804 includes the following changes: 1. Update to AGESA ComboAM5 PI 1.3.0.1d.
2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation.
Before running the USB BIOS Flashback tool, please rename the BIOS file (A5622.CAP) using BIOSRenamer.
Where can I download the latest ASUS PRIME B840M-A WIFI firmware?
Details and download instructions for the latest ASUS PRIME B840M-A WIFI firmware (version 1804) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/prime/prime-b840m-a-wifi/helpdesk_bios/
How often does ASUS release firmware updates for ASUS PRIME B840M-A WIFI?
We have tracked 19 firmware versions of ASUS PRIME B840M-A WIFI. Based on historical patterns, updates are released approximately every 47 days.
When is the next ASUS PRIME B840M-A WIFI firmware update expected?
Based on this product's update history, a firmware update for ASUS PRIME B840M-A WIFI is expected soon, between October 10, 2026 and November 17, 2026.
Is ASUS PRIME B840M-A WIFI still receiving firmware updates?
Yes, ASUS PRIME B840M-A WIFI received a firmware update within the last 3 months. The most recent version is 1804.