Hi guys, Ive bort a dsi running v2.1e fw and a r4i sdhc card upgrade (red box with a yellow star saying 1.4 in it from r4i-best.com). They said it backward compatible with 2.1e fw but ive tried total 12 custom firmwares from numerous sites to no such look. I get black screens top & bottom with loading (in white text) on the top screen and duz nothing?? Have you any idea how i can get to work please. I have a few days left before 28 days is up and still ive no idea if theyll refund me. If this card wont possibly work on that f.w 2.1e, what if i update my dsi firmware to 1.4 or is that a big NO NO?? Or, would i be better going for something like an Acekardi or if anyone can suggest thea best card for my dsi, id be very grateful of some help. Many thanks guys.