BIOS Downgrade

[mrc.toader]

Hello, I can't find any information regarding bios versions/changelog.
I have a SVE14A2M6E that used to work out of the box on both windows and gnu/linux (including the radeon gpu / hdmi output / etc).
After upgrading the bios my fps dropped considerably, uefi laggs hardcore and hdmi doesn't give any video signal unless I explicitly disable radeon in cmos.

I wouldn't really want to resort to modding it so is there any way to downgrade it?

[rich912]

Hi @mrc.toader

I'm afraid that the Sony support site doesn't provide any way back from a BIOS upgrade. I assume this was an official upgrade provided by Sony?

As far as I know your only hope would be to contact Sony Support to see whether they can help.

Rich