Why not just do it the easy way and copy the 3ds file to your 3ds sd card insert it into the 3ds. Start the 3ds and hold start. Select godmode9 the select sd card select the 3ds file and select convert to cia. Much easier this way.
Oops I missed out a step. Step 4.is the one.
1.copy the 3ds to sd card
2. Start 3ds then godmode9
3. select the 3ds file.
4. Select ncsd image options
5. Select build cia from 3ds file.
LOL back at your old antics again I seeLet's imagine hypthetically I got a .3ds file of a 3DS game through totally legitimate and legal means. Now let's imagine I want to play that on my system. How would I go about doing so? Do I need a flashcart?

Yes do what I said above lol.Let's imagine hypthetically I got a .3ds file of a 3DS game through totally legitimate and legal means. Now let's imagine I want to play that on my system. How would I go about doing so? Do I need a flashcart?
There does not seem to be a ncsd image option.Yes do what I said above lol.

No you don't need a Sky3DS+ to convert 3ds to Cia. You just need godmode9 as I stated above. It even tells you this in the 3ds hacks guide. https://3ds.hacks.guideu will need a Sky3DS+ flashcart, just make sure you get these from ziperto. even though its a copyrighted file and i cant give u like lots of games

