By some reason that I don't know the patch of DRAGON QUEST 1+2 was CORRUPTED.
It needs to be downloaded again.
I was generating the patch with SNESTOOL and it produces some kind of incompatibility when expanding this ROM. I have generated it with LunarIPS; anyway, it works with both tools now.
This is a hack of the JP version of Megaman 2 called Rockman 2 - Dr. Wily no Nazo. The hack changes the weapons, boss behavior & palette, and level design.
ROM / ISO Information:
Rockman 2 - Dr. Wily no Nazo (J) [!].nes - GOODNES 3.14