Just a quick heads up for anyone using a 3DS flashcard, or anyone that's considering the recent region free hack.
The gateway team, in their wisdom seem to have programmed some sort of kill switch into their software which has been reported to have killed consoles.
This kill switch activated only in clone cards the R4i Gold, 3DSlink, and the Orange 3DS, which all run on 'stolen' gateway code. This also applies to the region free hacks that work with certain DS flash cards.
If you have a gateway card and only use their official software then you should be ok, apparently the kill switch is only present in the latest beta update for the card.
Since the gateway firmware went beyond its beta, it seems the kill switch has either been removed, or tamed as the bricking seems to have stopped.