Usually what prevents it, its bios security implemented by the OEM or bios vendor… your system could accept it… by your statement you never flash a mod bios on that system or did you already and can confirm this?
What i stated before as actions, its only to debug the system response to mods and how it reacts to flash them…
Modern AMI Aptio V bioses can be edited using this tool, old “leaked” AMIBCP tool versions around, cant deal correctly with some Aptio V recent bios releases.