Here is a very quick guide I found on how to use Action replay codes on your R4 card. I only give instructions for the R4 but this works on the M3 simply as well, you just need to get the newest firmware, 1.04. This is verified by myself, and it works great Ok first, you need the latest R4 firmware, v 1.08: Next you want the Code Manager from Datel: US version: Euro version: Finally you want the R4 Cheat code editor: or if the site is down, then get it here: Now it gets easy:-D Update you MicroSD card with the new firmware Install the Code Manager.
Under Subscriptions right click Codejunkies US Games and select copy if you want all or just do this for games you want. Under My Codelists right click and select paste. Let it import the games into your codelist. Once it has completed go this folder: C: Program Files Datel Action Replay Code Manager local_codelists Find the XML, it should say something along the lines of customcodelist.xml Open the Code Editor and go to file and press Import XML file. Import the one you just made and then go to file and Save As cheat database.