x299 steel legend resizeable bar

Hi I have the x299 steel legend motherboard . I'd like to know if there is a bios update to enable resizeable bar for a 3070 nvidia graphics card.
I'd also like to find out the procedure to enable it in the bios.
Any help appreciated.
Thanks you

Hi Cormsok,

Thank you for your post.

Please update the BIOS P1.30G for the CAM function. The BIOS file's download link is as below.

X29STLG1.30G

After updating BIOS, please follow the instructions below to enable "CAM".

1.boot into BIOS and Go to Advanced\chipset configuration
2.enable "Above 4G" and "CAM"
3.Disabled "CSM".

Please make sure you are using the AMD RX6000 series or the NVIDIA 30 series with the vBIOS which supports Resizable BAR.

I linked the instant flash SOP as below.
https://www.asrock.com/support/BIOSIG.asp?cat=BIOS8

If you have other questions, please feel free to contact us.

All the best,
ASRock TSD