Ill just try it without the files but didn't you have to download the folder and then copy and paste it onto the root of your SD card and then scan the QR code, put it back in, edit your town, put it back in the 3DS and the inject QR code?
No.
The very first version needed just two files: acnldump.bin and acnlinjc.bin. The folder was the sourcecode, which was not obviously needed to dump and inject. Indeed, the instructions told you to copy just those files.
Some weeks after the first release, we switched to the QR method, which didn't need those files anymore. And yes, that was explained in the instructions too.
In order words, if duke_srg's server is up right now, the QR method should still work, regardless of you have the files in your SD or not.
And the old bit.ly URLs should work too if you still have the files in your SD (only if you have the latest ones, since the oldest ones are not supported anymore).
That's why I don't understand why do you want the files lol. But hey, take them anyway if you want to collect digital useless junk:
(right click and save as...)
http://usuaris.tinet.cat/mark/acnl_editor/rop/acnldump.dat (rename to acnldump.bin)
http://usuaris.tinet.cat/mark/acnl_editor/rop/acnlinjc.dat (rename to acnlinjc.bin)
Anyway... You should use the newest RAM hacking method to ensure you always get the latest RAM compatible dump.
It just takes a few minutes to configure, but then it becomes
faster and safer than the old bit.ly and QRs methods.