Well, if Shadow gets it, I hope he'll let the rest of us have it as well. It's not like it could cause harm to JJ2 in any way like the Episode compiler (which could seriously crash JJ2 if there's too many episodes on the list). Of course, this may turn out like the JJ3 demo, and just be deemed "illegal", and become hard to get. But let's hope for the first option, because I'm currently learning how to program GBA, and I was thinking when I get better, I'll try to make the REAL JJGBA.