Okay so my R4i-sdhc 1.4.1 cart is half bricked, meaning it won't work on my DSi but it will work on my ds lite. (My DSi has 1.4.1 firmware still.) This all came about when i tried running an upgrade (.nds file) for a different r4 clone cart on my r4i-sdhc. Yes I'm still an amateur at this. Now I was wondering if it's possible to downgrade/upgrade/unbrick the cart. I can't seem to find an old firmware or the latest firmware upgrade anywhere but yeah i'm not even sure if this would work. I'm not sure if the devs of r4i-sdhc are coming out with another upgrade anytime soon but I really want to just sell this cart and get an acekard 2i or EZ-flash vi. The reason I want to unbrick this is because I want to see if homebrews that require a slot two ram expansion (like quake team fortress ds) would run on a dsi since it has 4 times the ram than a ds lite. Any help? Any is appreciated. If it can't be unbricked could someone please tell me if Quake team fortress ds (which could be found on filetrip.net) works on dsi? Thank you.