I believe happen to have had a legit copy of Four Swords Anniversary but since I'm under the dummy profile I don't think I'm able to redownload it as of now. If I end up on my other profile I'd be happy to check though.
I actually did neglect to do the SysNAND backup (I'm a bit exhausted and thought it was just an SD backup, lol) so I have no issues waiting. As I said, it's not a pressing matter by any means, so take your time with it
I forgot to add that the system tickets in the other folder will need to be installed before doing system update.
Once you manage to update to 11.13U on the dummy profile and check that the 3DS is for realsie's stable playing AC:NL and other games, go back to
[1:] SYSNAND CTRNAND, press (X) to delete the (dummy)
data, and hold (R)-shoulder and press (X) on
data2 to rename back to
data. The exception error will likely return.
To troubleshoot this, read this example thread of someone who experienced a similar softbrick, performed CTRTransfer (Type D9), and ended up fixing his with that guide,
Debugging "gamecoin"-type brick. Be ready to grind this by Marco Polo'ing the bug.
***
If you manage to redownload those legit DSiware, don't fret whether or not I finish making the script
before after you reinstall them from eShop. I'll probably repurpose the script for something else.
Once all the DSiWare games are reinstalled, revisit the
Instructions in how to restore their saves and check to see if the DS(i) mode is working.
Edit - Good night. TTYL after catching some shut eyes.