I am about to upgrade my O3DS 11.4 EUR console with B9S (which I plan to uninstall before selling) to a New 3DS. I assume there shouldn't be any problems with SD cards as I am using a 64GB microSD with an adapter in my current system. Is there anything else I need to know, as long as I buy a New 3DS with 11.3 firmware, install B9S, and update to 11.4? Also, if I find a system with any lower firmware, can I still install B9S through softmod? If anyone is willing to buy here, I could sell it with the power cord + 8GB SD and keep B9S installed for £60 shipped.