How to update BIOS/UEFI firmware if the manufacturer supports only Windows and there are no updates on LVFS/fwupd

[aggie]

Here’s my other response doing this (another thread)

New install: RETBleed Vulnerable?

Thanks again to @arvidjaar … The BIOS update went fine - copied the .exe file to /boot/efi (while in TW) and rebooted to the Dell boot options (F12?) and selected BIOS Update, and when I clicked Select File, it opened right up at /boot/efi (I didnt know the BIOS executes the .exe, why I thought I need DOS or Win) The “retbleed” message still shows after BIOS update, so I set “VBoxManage modifyvm “VM name” --spec-ctrl on” and all is good. DONE !! ( RESOLVED )