ASUS rolls out beta BIOS for Ryzen 9000, restores TSME memory encryption ahead of AMD's July timeline
ASUS has begun rolling out beta BIOS updates that restore Transparent Secure Memory Encryption (TSME) support to several AM5 motherboards, making it one of the first board vendors to implement AMD's promised fix. The beta BIOS files cover ROG Crosshair, ROG Strix, TUF Gaming, and ProArt boards based on AMD's X870, B850, and X670 chipsets, with support for 'GNR Transparent Secure Memory Encryption' (GNR = Granite Ridge, AMD's Ryzen 9000 desktop CPU family).
TSME is a security feature that protects CPUs against physical exploits by encrypting memory data, making it unusable to attackers. AMD had silently removed TSME support from non-Pro Ryzen CPUs after a firmware update, sparking significant community backlash. AMD subsequently confirmed to Tom's Hardware that it will reinstate the feature via BIOS update, setting July as the timeline. ASUS's beta release suggests the fix is arriving earlier than AMD's stated schedule.
The BIOS updates are based on AGESA ComboAM5 PI 1.3.0.1b Patch A. X870 boards move to BIOS 2401; B850 boards to BIOS 1686; and X670 boards to BIOS 3901 or 3886, depending on the model. However, these are beta releases shared through the ASUS ROG forum, so users running production or stability-critical systems should wait for final BIOS builds.
For system integrators and enterprise buyers relying on hardware-level security features, ASUS's quick move signals vendor competition around memory encryption compliance. The gap between AMD's July timeline and ASUS's June beta release indicates motherboard makers are prioritizing this fix—likely due to customer demand from security-conscious deployments.