
Note that this does require another windows pc to open the bios-update executable, but there is no need to install windows on the target pc, nor do you need a windows recovery disk or windows-pe or any such thing. Here's what I did to update the bios on my HP x2 210 G2 running only Ubuntu 20.04 LTS.

This was done on an Ubuntu 18.10 computer. Method Detect information about your computer


Maybe this method might work for other HP computer models too? Hardware: HP EliteDesk 800 G2 TWR (L1G77AV).Operating system: Ubuntu (installed in UEFI mode).I guess this method is not supported by HP, so I add this warning: a BIOS upgrade, if failed, can break your computer! Requirements This method worked fine on an HP EliteDesk 800 G2 TWR when I tested.
