AMD Cezanne; functionality?

Hi; I’m using an Acer spin 514 (Ryzen Cezanne 5500 Series CPU; DEWATT) I’m interested in converting my machine to an chrultrabook with the dual boot instructions from both Mr Chromebox but with this error: * AMD Cezanne: legacy boot mode/alternative firmware menu works, edk2 boots, but screen back light is off. Will be fixed in next Google fw update (fingers crossed) * Are there any updates on this firmware update, and can I fix post-installation? Does the backlight issue affect boot mode as well as the OS?

Cezanne is not a good platform to run anything other than ChromeOS. The backlight issue still isn’t fixed (so good luck booting an OS blindly), there are issues with sleep, etc. Do not recommend at all.