ASRock B550M Steel Legend
Motherboards · ASRock
Last checked
Latest Firmware
Version 4.00
Released
15.2 MB
Update track record
- releases tracked since 2020
- 17
- typical gap between releases
- ~3 months
- since the latest release
- 5 days
- security-related releases · latest 2025-10-13
- 3
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Firmware History
4.00
LatestUpdate AGESA to ComboAM4v2 1.2.0.12. *To support Ryzen 5000 G-Series processors, it requires to update the BIOS with Matisse, Renoir or Vermeer CPU.
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Why Keep Your Firmware Updated
Motherboard BIOS/UEFI firmware is essential for hardware initialization and CPU compatibility. Updates often include microcode patches for security vulnerabilities, support for newer processors and memory, and stability improvements. Always use a UPS or ensure stable power during BIOS updates — an interrupted flash can render the board unbootable.