Can someone tell me a fix for my R4i v1.4 card?

I have an R4i upgrade 1.4 flashcart and it worked perfectly until my little brother upgraded my DSi firmware to v1.4.1E. Now every time I try to play it I get the error message "An error has occured. Press and hold the POWER button to turn the system off." I have tried a few different versions of a couple of firmwares and I wanted to know if there is a working R4 firmware that supports this update and that is compatible with my flashcart? If not, is there any way to upgrade my flashcart? Thanks in advance for the replies.

maybe availile on r4i-sdhc.com depends on what kind of r4 card you have, this is for the red version