IIRC, there is a section in one of the menus which tells you the info about the BM and BIOS installed.
If backups boot, then obviously the hacked BIOS is installed so don't worry about it. Standard CC chips out-of-the-box do NOT boot backups. If yours does, then it's had the hacked BIOS installed at some point by somebody...
Hope that helps...
P.S. Had to edit that link in your last post - hacked BIOSes are easy enough to find from Google - no need to link to them from here.