R4i SDHC happy box (Red box) Not working! HELP!

Ok so I bought a DSI XL and heard about 'flash carts' thingys. so I bought a R4i SDHC happy box card and updated it with the newest firmware. Everything was going great,UNTIL these recent games like, COD MW mobilized, Warioware DIY , and some other cool games would'nt work!!! I have tried and tried all kinds of different firmware but nothing works. :( can some one lead me in a better direction please? and no I cant buy a different card because I dont have the cash........

There are these things called topics. They contain patches. If you use the search feature on RomU, you will find topics with the patches, like this.gamename patch
OR
gamename AP