ZILZALLet them first offer bios updates to the 500-seriese motherboards to fix the current issues.

MetroidI'm still waiting for a bios update to ryzen 5xxx on www.msi.com/Motherboard/support/B450-GAMING-PLUS

Nothing yet and they said before December 2020.

c12038There will be 2 bios updates one for 16mb and 32mb bios size chips

none MAX = 16mb bios
Max =32mb bios

so yours will fall under the 16mb bios category

c12038Remember this is only for the 5000 series CPU and is not backward compatible to older series 1,2 CPUs Series 3 maybe they haven't decided yet to include this series in the bios release

c12038This not an update to fix current issues with current series Ryzen CPUs its the Ryzen 5000 update that allows 400 series m/b to accept the Ryzen 5000 series CPU but disables the current support for Series 1,2 and maybe 3 ryzen cpus


There will be 2 bios updates one for 16mb and 32mb bios size chips

none MAX = 16mb bios
Max =32mb bios

so yours will fall under the 16mb bios category

PanicLake"As a world-leading motherboards brand " that can't support more than one generation of CPU because they cheap out with small BIOS memory chip (16-32MB). On the website they don't even list the size of the bios in the motherboard specifications like other brands do.
For example I looked for the first 400 series motherboard I can find on Asrock, Asus and Gigabyte, they all say the size of the bios, and it is at least 4-8 time larger.

ASUS - 256 Mb Flash ROM, UEFI AMI BIOS
Gigabyte - 1 x 128 Mbit flash
Asrock - 128Mb AMI UEFI Legal BIOS with multilingual GUI support

They had to release the MAX version because of the 16MB bios and yet they only went for 32MB, making the same mistake again!
World-leading motherboards brand.... more like world leading greediness.

PanicLakeFor example I looked for the first 400 series motherboard I can find on Asrock, Asus and Gigabyte, they all say the size of the bios, and it is at least 4-8 time larger.

BaumThank you MSI good move

BIOS updates usually goes unnoticed by the consumer but are much needed and important also for the enviroment, lower the e trash pelase

c12038Also see this

Just remember that once you update a B450 to a Ryzen 5000 compatible BIOS version (when they release next year), it's expected that you will not be able to use previous generation Ryzen CPUs. So if something goes wrong, you can't decide to plop your old Ryzen 3000/2000 CPU back in (because they won't work once you've updated to the new BIOS). Anyway, take a look around your board manufacturer's website (ie Gigabyte, ASUS, ASRock, or MSI) for coming details or announcements on BIOS updates for 400 series boards.

dommitoQuestion: So my current system is a MSI B450 tomahawk (non Max) with a Ryzen 5 2600. I plan on purchasing a 5600x, should they ever be in stock, and I am wondering how the BIOS update would work. As my motherboard is not a max and is a 16 MB, from what I am hearing the new bios will most likely not support my old CPU. How do I update my bios if the update wont support my old CPU, and I can't use the new CPU until after the bios update? Will this update not brick my motherboard? Or is there a way to switch the CPU during/after the update?

Caring1From the MSI website.
Flash BIOS Button: Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.

dommitoOh ok thanks. I can look into it but do you know if it’s better to remove everything from the mobo to flash? I plan on removing the cpu but how about gpu, ram, sata, usb etc

Caring1Unplug all USB and drives, the GPU and Ram should be fine.