3DS Firmware has been updated to V6.1.0-12,yet following cards can work well on it :
R4i gold 3ds flashcart
R4i-sdhc rts 3ds card
and following is a detailed guide on how to update r4isdhc rts 3ds for N3DS V6.2.0-12
1. Download the latest r4i sdhc 3ds kernel V1.73b
2.unzip it, open the folder and you will get these files,like following pix shows
3. copy these files into your micro sd card and insert your micro sd card into r4isdhc rts 3ds flashcart,then put them together to your 3DS/XL (lower to V6.2.0-12) or DSi or NDS/NDSL and so on.
4. Power your console,then enter R4i-sdhc GUI, click the third icon “Config” just like following pix shows to update your r4isdhc rts 3ds card
5. Click start to start the update,during the update,pls dont power off your console or take your card out
After upgrade complete, you can make your r4isdhc rts 3dsflashcart work well on your N3DS V6.2.0-12.