We've noticed recently entire forum threads talking about the potential for the R4 3DS Cards bricking your Nintendo 3DS system. We'd like to point out that the R4 3DS has been selling for well over 2 months now, and there has not been a single instance where a 3DS has been bricked, even despite any updates which came out between the EU and the JAPANESE version of the 3DS. The entire homebrew community has also stood behind and stated that it would be impossible to brick the 3DS by way of using the R4 3DS Cards. It's just not something that can be done physically. Nothing is altered on the Nintendo 3DS in any way, and once the card is removed, and a game card put it, the 3DS acts just as it would without the R4 inserted.
While bricking accidentally may have been a worry back in the days when you would flash the rom on your Nintendo DS lite, it is not something that is at all possible by using an R4 3DS!
Which R4 3DS card is the right one for you? There are a number of choices now available, and even some older cards have been updated to work on the 3DS system. However, the R4i 3DS Gold card is one of our best sellers.