Cannot find files R4.DAT, R4imenu, and Moonshl2

My R4 isn't working properly(I think I have the one that can work and the Dsi XL/DSi LL/NDS/NDSL Upgrade revolution? i think) I think it is because of the lack of R4.DAT, R4imenu, and Moonshl2 files. Can anyone tell me where to find them.

Uhmm check what's written on your r4 cartdrigde, depending on that, just google the name and the site where you can get updates from should show up, the latest firmware update comes with those files your looking for.