A number of years ago I bought a "Red - Christmas Version R4i Card". The text on it says:
Chrismas Version
Limited SDHC
R4i
Upgrade V1.4
Revolution for (NDSi LL,NDSi, NDSL, NDS)
Looks like this --> http://www.r4isdhc.com/r4isdhc-christmas-limited-edition-features/
My DSi has the most upto...