Is your r4 3ds card from official site?

1. Where to buy genuine r4 3ds cards from
online?
Don't Get Suckered in to buying CLONES! Only the Genuine and Official R4
Cards get the regular updates and upgrades that you'll need in order for your
games, applications, homebrew and multi-media to work! Most stores will sell
you clones at slightly discounted prices, but when there's a DSi or 3DS
system update, and your card stops working, you'll quickly realize that the R4
3DS seller you bought from is also missing - or asking you to buy yet another
version of the card. The R4 3DS cards in Rev3ds.COME are upgradable
and have worked with every single update to date!!! And we back them up
with a 3 months warranty.
These days, almost anyone can sell you a product online. They can even offer
products under brand names that you've come to know, and have searched
for on your quest to buy the perfect R4 for your Nintendo DS, DSi or 3DS
system. Unfortunately, there are plenty of R4 cards that simply are NOT real
R4 Cards. Slightly lower prices lure people in to getting these cards (The
difference is often only about $2-$4 less than our official cards) but what
you're not told when you make your purchase is that you may - or MAY NOT
receive any updates when your console gets upgraded.

2. And it's not even the stores that can be blamed. The factories make the cards
and market them as upgradeable, and promise a whole slew of support for
their R4 3DS card or R4i Cards, but when the time comes, and the DSi or
Nintendo 3DS gets a system update, more often then not, these factories take
their websites offline, and are nowhere to be found - nor is there any updated
firmware or kernel that you can use to enable you to have continued
compatibility with your console.
But an US based site REV3DS prides itself on having ONLY the real deal,
when it comes to R4 3DS cards. It works hard to bring you great products at
super competitive prices.Rev3ds goes one step further, it also promises to
support and update all of our customers’ cards without forcing you buy a
whole new card with every single 3DS update.