I found another(?) ROM under the name of "[NDS]Dragon_Quest_The_Hand_of_The_Heavenly_Bride[EUR][FIX_M3_R4]" which finally works on my M3.
EDIT: Removed the question "where to get it" as it is against the rules to ask for warez links, sorry about that.
Hello! Been trying the whole day now to get DSATM to successfully fix the anti piracy protection on Dragon Quest V (E) (The very long boat ride). I am using a M3 Real by the way.
As I have come to understand the only way for M3 users is to use DSATM as the built in cheating system in M3 doesn't...