How can I increase the RX 5600XT's rebar size from 1GB to 8GB?

[lazye53]

How can I increase the rebar size from 1GB to 8GB for the RX 5600XT? I have the atombios editor, but I don't know which value I need to change. Can you guide me? I want to mod vbios and do this on it. I don't know the exact location.

ReBarUEFI/ReBarDxe/ReBar.c

Line 163 in 89f1308

/* Sapphire RX 5600 XT Pulse has an invalid cap dword for BAR 0 */

[xCuri0]

I don't this relates to this project ? ReBarUEFI includes the 5600XT workaround because it was part of the Linux kernel source it's based on.

Some people claim to be able to modify VBIOS to fix this but I haven't seen them share their methods.