ASUS Prime B840M-K
Motherboards · ASUS
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Latest Firmware
Version 1654
Released
17.0 MB
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Firmware History
1654
• Update AGESA ComboAM5 PI 1.3.0.1. Note: This BIOS version cannot be rolled back to previous versions. Starting from AGESA ComboAM5 PI 1.3.0.0, ECC-UDIMM memory speed will be limited to 5200 MT/s when paired with 9000 series CPUs.
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"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 stability issues observed on certain Ryzen 9000 configurations. 4. Resolves an issue where systems might unexpectedly prompt for a BitLocker recovery key during startup."
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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.