Host/DSP Question

[Fuel4300]

From r0f's Newbie Guide

Less than HOST R04.xx.xx Less than DSP DSPx06.xx.xx = VSELP KEEP AWAY!!!
Higher than HOST R04.xx.xx Higher than DSP DSPx06.xx.xx = IMBE UNF UNF! YES!

So then what is Host R04.xx.xx and DSP I06.xx.xx capable of? I am guessing IMBE with very limited revisions.

Also, is there a way to make a lower host and dsp, like the one above, support VSLEP instead of IMBE?

Thanks in advance,
Mike