As said by both above, yes, the newer and more updated b9s is compatible with all firmwares, but the key part is it isn't free on firmwares above 11.3. For 11.4 and above, a compatible flashcart is required, which costs around 20 dollars. A second modded 3ds can work too, or soldering in a hardond, but both of those methods are arguably more expensive and complex.
11.4 is the lowest it comes on. Most 3ds consoles come on 11.4 nowadays if they're brand new. You're already paying $150, you should just invest the other 20, which cannot be patched by the way.On what the New2DS usaly come? So can I use the old 3DS XL (I still have) to B9h the New2DS XL if he is on 11.3 or above?
11.4 is the lowest it comes on. Most 3ds consoles come on 11.4 nowadays if they're brand new. You're already paying $150, you should just invest the other 20, which cannot be patched by the way.
Read the guide, there's a link to the right R4i Gold to get.can you Recommend a card? It seems there are super huge differences :X