ASUS Pro B550M-C/CSM

Made by ASUS · firmware

ASUS Pro B550M-C/CSM is the CSM (Corporate Stable Model) edition of the Pro B550M-C, aimed at business deployments. This mATX AM4 board uses the AMD B550 chipset for Ryzen 5000, 5000 G, 4000 G and 3000 series processors, with four DDR4 DIMMs up to 128GB. It has two M.2 slots, four SATA 6Gb/s ports, Realtek 1Gb Ethernet and an HDMI 2.1 output.

Product released: June 1, 2020

Latest firmware version

Version 3645, released September 15, 2026

Last checked for updates: Oct 31, 2026 05:43 UTC

What's new in version 3645

Improve system compatibility

Download firmware 3645

firmware version history

LatestUpdate has tracked 29 versions of ASUS Pro B550M-C/CSM firmware, released between October 28, 2020 and September 15, 2026.

Version 3645 - September 15, 2026: Improve system compatibility
Version 3644 - August 27, 2026: 1. Update AGESA version to ComboV2 PI 1.2.0.12. 2. Mitigate fTPM vulnerabilities (CVE-2026-6726, CVE-2026-6727).
Version 3641 - June 30, 2026: 1.Update AGESA version to ComboV2 PI 1.2.0.12. 2. Implemented security updates.
Version 3636 - February 3, 2026: Improve system compatibility
Version 3634 - September 22, 2025: This BIOS update for Ryzen™ 5000 G-Series /4000 G-Series /3000 G-Series /2000 G-Series systems includes a critical fTPM firmware upgrade, enhancing security an…
Version 3631 - August 14, 2025: 1. Updated AGESA version to ComboV2 PI 1.2.0.F. 2. Implemented security updates.
Version 3622 - August 13, 2025: Updating this BIOS will simultaneously enable the Wi Fi 6E (6 GHz) band for Intel Wi-Fi module sold separately.
Version 3621 - April 1, 2025: 1. Updated AGESA version to ComboV2 PI 1.2.0.E. 2. Implemented security updates.
Version 3612 - January 8, 2025: Improve system compatibility
Version 3611 - November 4, 2024: 1. Updated AGESA to version ComboV2PI 1.2.0.Cc. 2. Resolved CPU exception when adjusting items like ""When system is in sleep, hibernate, or soft off states""…
Version 3607 - April 4, 2024: Update AGESA version to ComboV2PI 1.2.0.Ca. Fix AMD processor vulnerabilities security.
Version 3405 - January 8, 2024: 1.This update includes the patch for the LogoFAIL vulnerabilities 2.Support graphics card with M.2 storage
Version 3404 - October 26, 2023: 1. Update AGESA version to ComboV2PI 1.2.0.B 2. Update AMD 5000/3000 Series CPU fTPM version, please back up Bitlocker recovery key before updating this versio…
Version 3205 - September 4, 2023: Recommended for vital update to mitigate the potential security vulnerabilities
Version 3202 - August 2, 2023: 1. Update AGESA version to ComboV2PI 1.2.0.A 2. Mitigate the AMD potential security vulnerabilities for AMD Athlon™ processors and Ryzen™ processors 3. Improve…
Version 3003 - March 14, 2023: 1. Update AGESA version to ComboV2PI 1208 2. Mitigate the AMD potential security vulnerabilities for AMD Athlon™ processors and Ryzen™ processors
Version 2806 - November 29, 2022: Improve system compatibility,
Version 2804 - June 17, 2022: 1. Update AMD AM4 AGESA V2 PI 1.2.0.7. 2. Fix AMD fTPM issue causes random stuttering.
Version 2604 - March 7, 2022: 1. Update AMD AM4 AGESA V2 PI 1.2.0.6b 2. Improve system performance and stability 3. Improve system performance for AMD Ryzen 7 5800X3D
Version 2423 - August 26, 2021: 1. Update AMD AM4 AGESA V2 PI 1.2.0.3 Patch C 2. Improve system performance
Version 2403 - June 22, 2021: 1. Update AMD AM4 AGESA V2 PI 1.2.0.3 Patch A 2. Improve system stability
Version 2007 - April 2, 2021: - Support AMD AM4 AGESA V2 PI 1.2.0.1 - Support Smart Access Memory for Ryzen 3000 Series Processors - Fix the L3 cache performance in AIDA64 - Improved system…
Version 2003 - March 27, 2021: - Update AMD AM4 AGESA V2 PI 1.2.0.1 - Support Smart Access Memory for Ryzen 3000 Series Processors - Fix the L3 cache performance in AIDA64 - Improved system…
Version 1804 - February 9, 2021: 1． Update AMD AM4 AGESA V2 PI 1.2.0.0 2． Update AMD RAID UEFI driver 3． Improve system stability
Version 1602 - January 8, 2021: Update AMD AM4 AGESA V2 PI 1.1.9.0.
Version 1401 - December 8, 2020: 1.New CPU support 2.Add a ReSize BAR shortcut for AMD SAM support
Version 1216 - November 25, 2020: 1. Support AMD AM4 AGESA V2 PI 1.1.0.0 Patch C 2. Improve system stability 3. Improve DRAM compatibility 4. Improve system performance
Version 1212 - November 5, 2020: 1. Update AMD AM4 AGESA V2 PI 1.1.0.0 Patch C 2. Improve system stability 3. Improve DRAM compatibility
Version 0214 - October 28, 2020

Update prediction

A firmware update is expected soon, between October 14, 2026 and January 5, 2027.

ASUS typically releases firmware updates for this product approximately every 62 days.

Official ASUS Pro B550M-C/CSM product page

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Frequently asked questions

What is ASUS Pro B550M-C/CSM?

What is the latest firmware version of ASUS Pro B550M-C/CSM?

The latest firmware version of ASUS Pro B550M-C/CSM is 3645. It was released on September 15, 2026.

What changed in ASUS Pro B550M-C/CSM firmware version 3645?

ASUS Pro B550M-C/CSM firmware version 3645 includes the following changes: Improve system compatibility

Where can I download the latest ASUS Pro B550M-C/CSM firmware?

Details and download instructions for the latest ASUS Pro B550M-C/CSM firmware (version 3645) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/csm/pro-b550m-c-csm/helpdesk_bios/

How often does ASUS release firmware updates for ASUS Pro B550M-C/CSM?

We have tracked 29 firmware versions of ASUS Pro B550M-C/CSM. Based on historical patterns, updates are released approximately every 62 days.

When is the next ASUS Pro B550M-C/CSM firmware update expected?

Based on this product's update history, a firmware update for ASUS Pro B550M-C/CSM is expected soon, between October 14, 2026 and January 5, 2027.

Is ASUS Pro B550M-C/CSM still receiving firmware updates?

Yes, ASUS Pro B550M-C/CSM received a firmware update within the last 3 months. The most recent version is 3645.