Sorry to be a bother with black screen troubles but,
Yes, ahem, I'm not entirely sure of how, but I think managed to erase the BootManager program (and perhaps the firmware itself) via the memory card options of the BM on my CC2.0. Needless to say, I'm now faced with a black, unresponsive screen when normally booting the PS2. So far, the hardware recovery mode has proven to not work in my scenario and, now left with little other option, must turn to here for some assistance, which would of course be greatly appreciated and save me a good $300 in reordering.
Once again, thanks and a blush of embarrassment on my part, avataboo.