RX 570 stock bios
This one seems like the right one. https://www.techpowerup.com/vgabios/191558/sapphire-rx570-4096-170306
Same device id and subsystem id, contains elpida and hynix profiles.
Your card has the memory boosted to 2000 mhz, from 1750... and that can cause problems in games especially if the timings are also tweaked.
This one should also work, but you may need to use the patcher with it : https://www.techpowerup.com/vgabios/192114/sapphire-rx570-4096-170323-1
It's for different subsystem id (nitro+ card, not pulse) and as far as I can see it's just stricter limits on power ( +-20% instead of +- 30%) and it probably has a more silent fan curve (you could check with srbpolaris the fan curves stored inside the bios)
You can download your current bios and flash the bios you want with the AMD Flash tool : https://www.techpowerup.com/download/ati-atiflash/
If the latest version doesn't work, click on "show older versions" .. versions 2.87 and newer should work perfectly with the RX series.
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