It can, I've sent you memory image a moment ago.

I don't really know that much about Naomi, but I do know the GD-ROMs are encrypted. All I could tell by looking at big file (I assume that's 1:1 DIMM image) is the key is probably 8-bytes long, since some data repeats every 8 bytes. That's probably zero-padding or SEGASEGA.
And there's this strange NAOMIGD.BIN file that seems binary but has all bytes < 0x80...