It seems that Lenovo has the same problem, but it was overcome by someone (don't remember who..). Everything gets modded fine except the marker.. imatrix, is there another tool you might be aware of? Or is this one of the 'impossible' cases. Can't make sense of the BIOS in a hex editor either
I will have to look into the usual custom settings I do. Until I provide a next mod, pls make sure you have a viable recovery process in place. Samsung device can be very easy to brick with a wrong custom mod.
I'll set up a Phoenix Crisis disk with a standard BIOS rom on it, and test it (USB FDD should work) to be sure. Why is Samsung such a PITA? I'm starting to hate that brand