Updating bios without cpu
You should be able to update it the same way you'd update a normal BIOS.
How to fully reset your BIOSThis method is useful if your BIOS doesn't currently support a processor, and you want to add the microcode to support it.
That means if you have one of these motherboards, you'll be able to buy a new Ryzen 3, 5, 7, or 9 3000 processor and install it without needing a new motherboard. A71E7B90AMS.171E7C02AMS.181B350 TOMAHAWKB350 PC MATEB350 TOMAHAWK ARCTICB350 GAMING PLUSB350M MORTARB350M MORTAR ARCTICB350M BAZOOKAB350M PRO-VDHB350M GAMING PROB350I PRO ACB350 GAMING PRO CARBONB350M PRO-VH PLUSB350 KRAIT GAMINGB350 TOMAHAWK PLUSB350M PRO-VD PLUS you throw away your 2nd-gen CPU since you'll need a compatible CPU to install the BIOS update — if you're building a new system, check first to see if the BIOS version is at least the version that adds Ryzen 3000 series support.
AMD announced that the newest Ryzen 3000 series processors can run on specific older AM4 motherboards with nothing but a BIOS update.
This method may not work if you're trying to update the microcode for a processor that's already supported by your BIOS (you should use method 1 instead).
This is the case because this method doesn't remove the old microcode, so the old microcode may get used instead of the new microcode you're adding (we're not sure which microcode the BIOS will use).
If you can't seem to get the motherboard to update on its own, you'll need to do it manually using a USB drive.
16GB is more than enough for storing a BIOS update for your motherboard.
With the release of the new Ryzen 9 3900X from AMD, alongside the company's latest RX 5700 XT GPU, I decided it would be great to replace some of my older hardware and see how far we've come.