Question B550 motherboard that works with 5900X without BIOS update

[graysky]

I'd like to hear some feedback from people who have recently purchased a B550 motherboard intended for use with a newer Zen3 chip like the 5900X: did the board POST and allow you update the BIOS with your CPU? I read about some newer boards not POSTing with a Zen3 at all. It's a catch 22. You need a BIOS update to boot the 5900X but you can't boot to update the BIOS.

I am considering a MSI B550 GAMING CARBON but their own web site shows 5900X support with a BIOS from 2020-11-04 (7C90v14) so perhaps odds are in my favor of receiving a board with at least this revision. Thanks for the feedback.

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[Iron Woode]

I'd like to hear some feedback from people who have recently purchased a B550 motherboard intended for use with a newer Zen3 chip like the 5900X: did the board POST and allow you update the BIOS with your CPU? I read about some newer boards not POSTing with a Zen3 at all. It's a catch 22. You need a BIOS update to boot the 5900X but you can't boot to update the BIOS.

I am considering a MSI B550 GAMING CARBON but their own web site shows 5900X support with a BIOS from 2020-11-04 (7C90v14) so perhaps odds are in my favor of receiving a board with at least this revision. Thanks for the feedback.

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the board in your question supports BIOS flashback. That is all you need to know.

 

[UsandThem]

the board in your question supports BIOS flashback. That is all you need to know.

Since they missed that detail from MSI's website, we could probably add this as well.

• Flash BIOS Button with Optmized ClearCMOS Function: Simply use a USB key to flash any BIOS within seconds. Restore the BIOS to the default settings without any additional actions.

(e.g. You don't even need a CPU installed to flash the BIOS)

 

[Iron Woode]

Since they missed that detail from MSI's website, we could probably add this as well.


(e.g. You don't even need a CPU installed to flash the BIOS)

on the I/O panel picture, you can see the labelled button and the labelled USB port for flashing the BIOS.