How to Unlock DLC Quests in Dragon Quest IX
This guide is meant for people who are playing Dragon Quest IX on an emulator or some other way that prevents them from accessing the internet and enabling these quests. Assuming that whatever method you're using to play Dragon Quest 9 still allows you to use cheat codes - you'll be able to do these side quests!
Luckily the extra quests in DQ9 are already in the game - there is no actual download needed, just a "flag" if you will that lets you access the rest of the quests. If you've never used codes on an NDS Emulator before I recommend reading my How to use codes on Desmume Guide.
Access All Extra DLC Quests
Press Select.
94000130 FFFB0000
22108B11 00000038
22108B4D 00000088
22108B4F 00000080
22108B51 00000080
12108B52 00008888
22108B75 00000088
C0000000 00000007
02108B54 88888888
DC000000 00000004
D2000000 00000000