R4i SDHC-Silver RTS Card for DS, DSi(XL), 3DS(XL)
R4i SDHC-Silver RTS(2017) works on DSi V1.45 and 3DS V11.4.0-37 perfectly. R4i SDHC-Silver RTS is 100% compatible with all the NDS Roms, maybe later for 3ds roms. This 3ds flashcart also contains the RTS (real time save) feautures, it's easy to make the cards work on nintendo 3ds/ds. The firmware and the kernel from their official site are upadated frequently.