Open-Source Firmware Lands on AMD AM5 with Dasharo v0.9.0

Here’s a win for anyone who believes you should fully own the hardware you buy. According to Tom’s Hardware, Dasharo v0.9.0 from 3mdeb is the first open-source firmware to reach AMD’s AM5 desktop platform, bringing Coreboot and openSIL to Zen 4 APUs on the MSI B850-P WiFi. For the PC-building community, this is a genuinely encouraging milestone.

What Dasharo actually brings

• Coreboot foundation, a lean, open firmware core instead of a closed, bloated legacy BIOS.
• openSIL support, opening the door to more transparent silicon initialization.
• A path toward auditability, so security-conscious users can actually see what runs before their OS boots.

Why we think this matters

Most motherboards ship firmware that’s effectively a black box — you flash it, you trust it, and you rarely peek inside. Dasharo flips that model. For developers, researchers, and privacy-minded builders, being able to inspect and verify the pre-boot environment is a big deal. It’s also a boon for longevity: open firmware communities tend to keep older hardware alive long after the manufacturer moves on.

We love seeing competition in the firmware space. When users have alternatives, everyone — even the closed-source vendors — ends up raising their game.

The honest trade-offs

• Pro: Transparency, auditability, and community-driven longevity for your hardware.
• Pro: A cleaner, faster boot path built on modern open code.
• Con: Right now it’s tied to specific boards (the MSI B850-P WiFi), so it’s early days.
• Con: Flashing firmware always carries risk; this is a project for confident builders, not first-timers.

Our verdict

If you’re a tinkerer who values ownership and openness, Dasharo v0.9.0 is worth watching — and worth trying if you own a supported board. For everyone else, it’s a sign that open firmware is finally knocking on the mainstream desktop’s door, and that’s good for all of us.

Where to learn more

Check 3mdeb’s Dasharo project pages and the supported-hardware list before attempting any flash, and always back up your stock firmware first.

Source: Tom’s Hardware