This is interesting, I think I'll give it a try soon. So from what I'm reading, you run this dldi .nds file from a slot 2 based cart? Is there any possible chance that this can damage the DS? I'm planning on using my DS Phat, but I have an Ez4FDlx (lite size). I do have a Gameshark for the GBA and have been using that as a bridge to test things on my flashed DS Phat, thought it didn't work well with my new 3-in1, think it'll work for the dumper? Also, just wanted to verify, that I run this from slot 2, with the game I want to dump in slot 1. Thanks.
EDIT: I just saw the thread for this tool in the Ez-Flash subforum, I think my questions have been answered in that thread.
the file itself is not dldi, (rather you need to dldi patch it to be compatible with your slot 2 card). As long as there is a dldi patch that works with your slot 2 card, it should work. This file should not damage your DS anymore than your flashcards. Yes, you will need to boot from a slot 2 card but thats in DS mode (hence the need for a nopassme or equivalent). the original card will be in slot 1. Just follow the menus in the progam and good luck.