You and me both have the same r4's and it's "R4 Upgrade Revolution for DS (NDSL/NDS)" right?, exact same problems no solutions what so ever. I've been at this for 2 weeks still no luck its better to just buy a new card, don't waste your time.
*Edit*
Oh yea I know the original firmware for it...
I feel like school, back when I was actually in school, was more entertaining though, because of how much I get to interact with people, hang out with friends, and other stuff like that. All I get to talk to at work is my boring coworkers lol