As I know,the R4i Gold 1.4.1 no longer produced by the factory,if you dout wether the R4i Gold support 3DS 2.1.0-4,just order one which Rydian reviewed from http://www.r4ds-ds.com/products/R4i-Gold-3DS-Card-p-246.html ,which you can use directly outbox with your 2.1.0-4 system.