R4 card has lots of good functions and one of those is action reply. In order to use the Action Replay function on the R4, you will need to download the R4DS Cheat Code Editor. Before using the R4 card Cheat Code Editor, it is a good idea to get the latest firmware for the R4.
How to use the R4DS Cheat Code Editor
Instruction Manual for R4 Action Replay Cheat
Starts from the v1.08 official version, the R4 supports Action Replay function, simultaneously supports the official Action Replay database and the user database. The R4 Action Replay Cheat uses for the creation and edition of user’s database, either supports the user manual input or XML files import.
Let’s go through it step by step: First, create a new cheat database, and delete the current data (before deleting there will be a prompt about whether to preserve). Then, open existing cheat database. If there are some cheat codes in the current database, the opened data will be added behind the cheat codes in the current database. This function can be use to merge of several databases. Save the current cheat database to the user database. Import the cheat code of the XML file, if there are some cheat codes in the current database, the imported data will be added behind these cheat codes. Exit the current application program. Add a game item behind the current database. Follow by add a folder item behind the current game; the R4 Action Replay only supports the level one folder structure. Then, add a cheat item behind the current game or folder. Delete the current item. Enhanced your NDS gaming experience by getting more the tips in using R4.

