Got the R4i SDHC patch to work on dsi v1.4.3 if you get an error on your dsi trying to update from the dsi kernal v 1.47 dont you will only get an error. Instead put v1.42 into your dsi and update it from there and it will work for you download link is below hope it works for you.
--> http://filetrip.net/...ish)-1-42b.html
--> http://filetrip.net/...ish)-1-42b.html