From now on, the r4i sdhc dual core cards can directly support the latest 3ds v6.1.0-x
Yesterday get the latest news from official website:
■2013-7-04 2013 R4I SDHC Dual-Core kernel updated to wood 1.60.
It can directly support 3ds v6.1.0-x now.
Also the r4i sdhc siliver can support 3ds v6.1.-x too.