This is only for cards labeled "2014" or a later year. The type (gold, dual-core, rts etc) doesn't matter.
It's the same brand as r4isdhc.com. Flashing a backup from r4isdhc.com allows you to use the r4isdhc.com kernel.
It's the same brand as r4i-gold.eu. Flashing a backup from r4i-gold.eu allows you to use the r4i-gold.eu kernel.
I think that it's the same brand as r4imax.com. Flashing a backup from r4imax.com allows you to use the r4imax.com kernel.
However there is no backup from r4imax.com. Please contact me if you have a card from that website.

Only cards with the "Touch! Bomberman land" icon are supported! That means R4i 3DS B9S and some R4i 3DS RTS variants