If things don't work out as expected after putting the new "MackieOS.exe" file in the place where the original was, then you can always repeat the process, and rename the original file back to "MackieOS.exe" - then the changes are undone, and you can look at the list of unauthorized plug-ins again
As for "before you reset the BIOS" - the D8B Database has info on how the BIOS needs to be set, for the old Motherboard (two different types of memory banks that take different length memory modules), or the new Motherboard (a single bank of memory slots, that are all the same length).
The settings are a little different, depending on if you have the "old" type of motherboard or the "newer" type. That's why you'll need to look for the correct posting in the database.
Setting the BIOS per the instructions for these motherboards is NOT the same as using "Load optimized settings" (or whatever it's called) in the BIOS. These settings will NOT be correct for use with the D8B... it's just called something like that in the BIOS, because the same motherboard could be used to run (an old version of) Windows or Linux, etc.
So, if you haven't done so, yet, look at how the BIOS needs to be set for the old motherboard, or the "HDR and newer" motherboard:
https://www.sonido-7.com/d8b/maintenance.html
Again, best of luck!
