Thanks for the info !Hello im here to give feedback for the Dragon Quest Heroes II cheat, the cheat is not working for the turorial part on the beginning of the game but once you get through to the City the cheat start to work again, this cheat is same as "Aichitaka/Jialeyne19, Larry Dungo" Maidump game. Not working on Tutorial but working when you get through to the city, hope this help. Sorry for bad English.
The reason why some codes (HP) do not work in the tutorial is that there are 2 levels one is the battlefield and the other is the village. All codes work in the battlefield but not in the village. Strangely enough the tutorial part is counts as a village level and that's why it doesn't work. You can find this out with the Hold X to Fly code because I made this code for both levels and it must work everywhere.
_V0 Hold X to Fly
$B200 00000001 00000000
$C201 00000001 00004000
$3201 000081F0 02194DF0 Battlefild
$0000 00000000 41400000
$B200 00000001 00000000
$C201 00000001 00004000
$3201 000081F0 02D375F0 village
$0000 00000000 41400000