En un foro chino parece ser que tienen un método para saltar el limite de 10 juegos.
How to crack SKY3DS - “10 games limit”
First of all, Supposed you’ve already got 10 games in your microSD card, see these games order in the following table:
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No. 1 2 3 4 5 6 7 8 9 10
GAME A B C D E F G H I J
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You can then format either that microSD card or another new one by Diskwriter, and rewrite the games sequentially into the microSD card at order: A, a, B, b, C The new games you would like to play more (more than 10) : a, b, c, d, e..
Turn on your 3DS console, insert your SKY3ds card with that microSD card, while the Game “A” logo image is showing on the top screen of console, follow the steps below:
1. Press the red button on SKY3ds, the blue light turns on, when it keep fast flashing, take out the SKY3ds card immediately.
2. Re-insert SKY3ds card, the Game “a” logo image will show on your 3DS console, press the red button quickly, you got the Game “a” run properly now once the blue light keep flashing.
You can get any/more new games b, c, d…run by the same way as long as you put the new game between any two old games(A,B,C,D,…J, which has been remembered by SKY3ds card) in pattern A, a, B, b, C… and rewrite them together into the microSD card. That’s all! Enjoy you SKY3ds card now!
No se si será cierto, pero es lo que están diciendo por ahí.