Can R4s work on an updated DSi?

My sister upgraded her DSi, and can no longer use her R4. Is there any way to update the R4? I assume there's got to be.
Thanks.
-Dan

if it is an original R4 then no. If it is an R4i then it can be updated using a DS or a non-updated DSi.

It's an R4i. Sadly, I know nothing about how to go about upgrading such a thing...lol.

there should be an update for the dsi 1.4.1 firmware on your cards official website if not i cant help you

Nope , you need to order a new flashcart .

i recommend buying a scds2 or an acecard 2i