[Picking a Flashcart] Upgraded from NDS Lite to New 3DS, What Flashcart to use?

Hello guys and gals, a few weeks back, I decided to give in to the hype and order a New Nintendo 3DS (Pokemon 20th Anniversary Edition) and it just arrived. Now, I want to play some games from a flashcart, as I have been doing with my DS Lite for the past 3 or so years. Before I do something stupid like brick my 3DS, I want to be knowledgable in terms of the hardware/software incorporated with 3DS flashcarts.

1. My software version is 10.2.0-27U, which, upon closer inspection,...

[Picking a Flashcart] Upgraded from NDS Lite to New 3DS, What Flashcart to use?