My action replay ds has deleted all my codes. When I try to add them i get an error message "failed to write a file onto your action replay, not enough free space". There are no files on it but cannot add any more. Help please.

You have to turn the DS on with your Action Replay inserted. As soon as the DS boots up hold down A+B. With A+B still held down, as soon as you see the Action Replay DS license screen press and hold down buttons START+SELECT so that you now have 4 buttons held down. Hold all 4 buttons down for around 10 seconds until your Action Replay loads. If your Action Replay doesn't hold on the license screen for around 10 seconds while holding the 4 buttons down, you may need to turn off your DS and try again. Then you will be able to download codes again!

I had the same problem. I thought i corrupted my action replay ds. I was worried, so i looked it up. Follow these steps and then re-insert your cable and re-start the software. 1. unplug all cables. 2. insert the action replay ds cartirage (without game) 3. Before turing on the ds, hold down A+B 4. Keep holding, and turn it on. 5. While still holding A+B, and after turning on the ds, wait until the ds "health and safety" screen comes up, then press start+select. Now you should be holding down 4 buttons at once. 6. If done correctly, the health and safety screen will appear for about 1 second, then both screens will go blank for about 10 seconds. The action replay screen will then appear. 7. Turn off your ds, then plug it into the computer and run the applicaion. The action replay will have no codes in it, and you will be able to re-write all the codes you want on it. Hope this helps. This is my translation of the page, because i found it confusing. Here's the link straight from CodeJunkies themselves: http://us.codejunkies.com/support/article.aspx?article_id=351

just reset it then try again it should work this is how to reset 1/ With the console powered off, hold A+B. 2/ Power up the console while still holding A+B. 3/ As soon as the Nintendo screen is displayed, before our screen stating this product is not endorsed by Nintendo, press and hold Start and Select while keeping hold of A+B. 4/ Continue to hold these buttons until the Main Action Replay screen is displayed, then release. Your product is reset, and will accept codes once more.

Try resetting the hardware by following these steps: 1/ With the console powered off, hold A+B. 2/ Power up the console while still holding A+B. 3/ As soon as the Nintendo screen is displayed, before our screen stating this product is not endorsed by Nintendo, press and hold Start and Select while keeping hold of A+B. 4/ Continue to hold these buttons until the Main Action Replay screen is displayed, then release. Your product is reset, and will accept codes once more. This worked for me source : http://us.codejunkies.com/support/support_article.aspx?prodID=33&articleID=86

How do I format it?

mine does that to but when i try to add games manually my screen freezes...

follow this link to help reset the action action replay>> http://www.youtube.com/watch?v=tnhA3n1hvsI