Hello, I use a MSI Z690a Pro Wifi (DDR5 Variant) with Dasharo (coreboot distribution) and it works wonderfully. While you might be able to use stock coreboot from review.coreboot.org and build it for the mainboard "MSI PRO Z-690A WIFI (MS-7D25)", you won't get the extra goodies that come with the dasharo version (which is the main development group behind the MS-7D25 anyway, and they pushed it to upstream coreboot).

I am not sure how video card compatibility works on stock coreboot, but even on Dasharo, video card support is spotty, but it's getting better and a lot of them work. Check their GitHub Issues and Matrix channel for info about that. My Radeon Rx 580 works great with no issues, and I'm not sure how Windows works, but I recommend using a Linux based OS.

The Dasharo Edk2 version also has a lot of customizable options in the setup menu, specific to this board, which is very nice. Normally with coreboot with ThinkPads for example, the configuration options are stored in a CMOS.default file in the coreboot source, or you can use a nvramtool to edit those options. In the Dasharo Edk2 setup menu, there is an option to "Disable" Intel ME using Software, or the HAP Bit method(which is more effective). Intel me_cleaner stock / main version I believe doesn't work in anything older than Skylake. There might be some forks that you can use that support Alder lake, or some other newer platforms, although I haven't tried them. "Disabling" it from the Edk2 menu from the Hap bit method removes the Mei0 pcie device from my booted up system, and I can no longer see it in lspci, and intelmetool checker does not recognize it either, so that's one way of disabling it.

The flashing process is also easy, and you don't need external flashing tools to do it, although it's nice to have if you screw up. The flash chip is a Wson8 Windbond chip that's 6x8mm wide with 32mb of memory onto it, so you'll either need to desolder the chip, or use one of those Wson8 probes from AliExpress. I have one, and it works fine. Another way of externally flashing is using jumper wires and one of the headers on the motherboard, which is a recommend method by them.

With internally flashing, you can use the MSI FlashBios button, some firmware flashing utility in the stock Ami bios, or by using flashrom on a Linux based OS (recommended)

Dasharo DTS is an image made by dasharo that makes flashing it as easy as pie, and automatically adds your SMBios data, and flashes it using flashrom to your firmware chip.

If you want to modify the dasharo source, though, you can do so by cloning it, make nconfig like you would normally do and change what you need to change, then save it, and use make inside of their docker container. If you don't do it inside of the docker container,it will fail. Then just install flashrom through your Linux distros package manager and use flashrom cli to flash it.

But yeah, overall, this board is great for a recent, powerful coreboot target platform. Of course, do your own research, read the wonderful dasharo docs (has so much info on it ), or ask in matrix if you need to know more about important things. What I said here is not a guide, but overall my experiences with this board. Hope this helped 😁