This post talk about upgrading UEFI/BIOS on a Lenovo laptop with FreeBSD. I am pretty sure that it can apply to any UEFI/BIOS and any BSD OS family.
The but difficulty is that ALL the computer vendor think we use Windows (Windows 10 now), some (Lenovo does) knows about Linux (ubuntu or redhat).
All the tools they provided are for those platforms. The dual-booters can do the upgrade, the fanatics (like me) can’t
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