Hacking Easiest Method to install CFW on 2DS on FW 11.4 in 2018??

[lettuce]

Have gotten a Pink 2DS for my 7 year old niece for xmas and want to install CFW onto it (probably Luma3DS) what is the easiest method for a 2DS on FW 11.4 in DEC 2018?, and its there a way to do it without a flashcard, DSi Game or Hard modding?

EDIT: I have a Blue Gateway card that i used to use on my O3DS years ago but have tried inserting that into the 2DS but get a system error message when powering on the 2DS so im not sure thats compatible with the 2DS?

 

[KleinesSinchen]

There are not pure software exploits for 11.4. Update the firmware to 11.9 and follow the "Frogminer" path of the guide:
https://3ds.hacks.guide/
You do not have to buy DSiWare, but your DS-mode must be working. Just start any DS-cartridge or the DS-version of the "Download Play" app. If you can play DS games and/or start DS Download Play, you can use the free Frogminer method.

If you have a not working DS-mode, ntrboot flashcart or hardmod are your only options.