r4i-DHC 3DS RTS supports Nintendo 3DS V6.1.0-x and DSi V1.4.5 perfectly
R4i-SDHC 3DS RTS is a new 3DS card for N3DS console, made by r4i-sdhc.com team. It is the advanced version of R4i card – r4i V1.4.1. The firmware and kernel have been released on http://www.r4i-sdhc.com, which can run NDS ROM fine. So that you can play NDS games on 3DS for free! However, R4i SDHC 3DS card does not support 3DS games now. This R4 card support micro SD/TF card up to 32GB, and support wifi ( upgrade automatically and smartly ).
The latest Note:The R4i-SDHC 3DS V4.5 card can support 3DS V6.0.0-x,5.1.0-11,V5.0.0-11,V4.5.0-10, V4.4.0-10, V4.3.0-10,V4.2.0-9, V4.1.0-8, V4.0.0-7, V3.0.0-6 and NDSi V1.45, V1.44