It's unnecessary for those R4i-SDHC RTS cards which support N3DS V11.1.0-34 to work by updating the firmware.
[2016-10-20]
R4i-SDHC RTS cards can support N3DS V6.3.0-12 perfectly(certain model only), please update your kernel to V1.84b. If your RTS cards cannot support firmware update for the moment, please be patient, the new patch will be released soon.
[2016-09-21]