Just follow the install instructions for whatever flash card you get. You should be visiting the web site that supports that card to obtain the latest firmware for it as well as the latest "Moonshell" program.
I have often read about "patching" but I have never had to for my NDS-L and NDSi-XL for any NDS program whether it be a game or homebrew.
There are also Dictionary program, Voice recorder and NotePad that works well with the NDS-L and NDSi/NDSi-XL.
For anyone that is out to purchase one of these Flashcards that replace the game cartidge I would recommend getting the type that support the "NDSi" series device. These cards tend to be backward compatible so should you decide to advance to the NDSi or NDSi-XL you can by just moving your cartidge over to it. I do not know if these cartidges will work with the new NDSi-3D.
John
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