It is safer to do small increment BIOS update than a big quantum leap which increases risk of failed flash.  you do not to have strictly follow sequential versions to flash but I would not jump to latest version from early one.
Question. I have a very old Optiplex 390 bios version A05 and want to update bios. Can I install the last or most recent version only? Or do I have to install all updates in order of release one at a time?
Bios update