in opcode.h replace
#define NewZoneCode 0x00f0
by
#define NewZoneCode 0x00ef
that won't give you the mobs, but at least you get the map and can navigate
encryption doesn't seem to be changed, it's only opcodes that got shuffled (and maybe a few structs change)
no more opcode for today from me, recompiling on my computer is way too slow :\