I'm kinda on the same boat as Ronanklan, except I still didn't buy my New 2DS XL (but will soon). Is that really all you need, the console + a 2$ eShop game, regardless of firmware version? Can you play regular DS games on top of 3DS ones with this CFW? I've read about so many other more complicated methods before that I'm surprised to stumble upon this.
A guy named Hunter on this forum help me hack my new 2DS XL console with just my home network, my FiOS router connected to my PC and connected to my 2 DS XL via System Settings->Data Management->microSD Management. Once there it will ask you to create a Username & Password, but only if its your first time there.
After youve created the Username & Password, go on your PC go to Start->Computer->Network there you will see an icon for your 2DS XL Console and it will be whatever Name you created for it. After you click on the icon it will cause a prompt to appear asking for a username and password.
The username and password that you created for it and then you will enter it. Then you will be connected to the SD card of your console via your computer. (You create the name for your console icon right before you created the Username&Password.)
Anyways after you're able to open the SD card of your console via the network on your computer, you're able to make all the changes that are needed to hack your console.
After you make all the changes then you can disconnect your console from the network and then there's some other steps you have to do with the boot of your console.
(I forget what they were, but it involved a couple system changes, installing Luma, and installing the .CIAs [that you put onto your console's SD card while connected to your PC via home] via the FBI Program.)
By the way the method that this guy helped me do, is called SeedMiner.
But yeah after installing all that stuff I was done and that was it. So I booted up the free shop and bought all of three DS games that I wanted for free!
Basically installed digital copies of all the cartridges I had so I can trade the cartridges in at GameStop for credit...
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So wait after you hack your console with CFW, you cannot play DS cartridges anymore? That cannot be right can it?
In my mind I just don't see how a custom firmware would affect a game cartridge...
I'm going to be really bummed if that's true because I just bought five DS titles off eBay really cheap...
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I noticed people saying that they're console went brick on them, what the hell does Brick mean?