After updating something in internet i found that the R4i we have doesnt work, i had installed v1.4.2 on a R4i SDHC and after doing something in internet the nintendo Dsi is now in 1.4.3E. Any idea on what i can do? The actual R4i is originally version 1.4.1 - thanks in advance
You'll have to find the latest patch. I believe there's a fix for the latest DSi update.
First, would you please check out whether the r4i sdhc you have is this one from R4i-sdhc.com RED R4I-SDHC Upgrade Revolution for DS(NDSi/NDSL/NDS) [FC030] : Video Games Accessories Wholesale - Digitopz.com
Seond, you need to know now that you have update your DSi version to V1.43, but your R4i sdhc haven't updated to support DSi V1.43, so you can't use it.
Third. how to update your R4i sdhc V1.41 or 1.42 to DSi V1.43 look at this NDSi V1.4.3 firmware upgrade instruction