I made a topic a while ago about this and nothing could be figured out at the time, maybe this time will be better. I have an original R4 and I've tried several different firmwares from the original firmware to YSmenu and now WoodR4. None of them have solved my problem, even the latest updates. So the problem is, my R4 only works in one of my DSlite units and no other DS's. I've tried it in 3 other DSlite units and 1 DS phat unit and none of them recognize that a cart is in the DS slot. Now my one DSlite that the R4 did work in has blown it's fuses and until my ordered parts come and I repair it, I can't use the R4 at all. I've even tried all the paper tricks in various combinations and they didn't fix the problem either. Now I have an Acekard2i that I got a couple months ago and it works perfectly fine in all the DS's I tested the R4 in, plus retail games run fine without any problems in all of the tested DS's as well so I doubt it's bent/broken connector pins. Any other ideas for why my R4 only seems to work in a single DSlite unit and none others?