32. Put your microSD in your PC.
33. Boot your 3DS and re-follow Step 17.
34. Now you can delete the "a9lh", "files9", "Themes" folders and the "arm9.bin", "arm11.bin", "SafeA9LHInstaller.dat" and "soundhax-usa-o3ds.m4a" (on O3DSes, on N3DSes it's "soundhax-usa-n3ds.m4a") files and put your...