Bigger is Better

Okai been eying off that new DSiXL and wondering if i buy it do i have to buy another flash card with it currently have the DS light not interested in any DSi firmware just after the bigger screens Anyone know? or can i keep using my R4/cyclo ds

You'd need a dsi compatible flash cart, r4's only work if it's an r4i type, and the cycloDS, as awesome as they are, don't work.It's in the hardware of the flash cart that allows them to work, not simple software based firmware.