Yeah, r4isdhc.com cards are terrible. You can find a ultimate guide on Fake R4s on *snip and your kernel should have these files: R4.dat, R4iMenu (Folder) and moonshl2 (folder). The other ones can be changed.
I looked at their website, downloaded the kernel, tried it out, but I'm not sure how they want me to do it - sounded like I had to have 1.4.2 first. Their how-to is only for that version to upgrade... any thoughts?
*snip is a www.r4i-sdhc.com fanboy site that claims the www.r4i-sdhc.com carts are real R4's when they are not (If you go to the links for "Fake R4's" and "How To Identify a Real R4" they list many clones of the real R4 i.e. carts that can run Wood as fakes and the www.r4i-sdhc.com cart as a real R4 which is BS) . The kernels and firmware updates on that site are useless for the www.r4isdhc.com carts.
I'm afraid that your www.r4isdhc.com cart is useless on your DSi. Time to get something better I'm afraid (and don't get a www.r4i-sdhc.com cart either).