Ok yes I found another report with another user that had problems with it.
Maybe the correct syntax includes /p but it seems very dangerous to try since that is for flashing too...
Did the utility actually try to do something or did it just come back showing the help syntax again?
Anyway yesterday I found the right tool to add a splash screen, but it does not seem to support extracting it, it is attached to this post.
But I have an idea, look in c:\boot.ini if the oscilloscope uses a custom KERNEL
If it does please upload the one it specifies.
If no custom KERNEL is shown upload the default Windows one with filename: NTOSKRNL.EXE from the Windows System32 folder.
You can also try the following tool to make a BIOS backup, but it might not be easy to flash back since the Intel flash tool uses a custom format.
But it might be possible to extract the splash screen from it, so that would be two possible sources, the other being the custom kernel.
https://m.majorgeeks.com/files/details/universal_bios_backup_toolkit.html