1) Delete the a9lh folder on SD root
2) Delete the 3ds folder on SD root
Note: It may be best to get the latest forks for most binaries in the "Copy 2 SD Root" folder, as directed by the web guide for this step. The "First-Attempts Binaries" folder is provided in case any of them can no longer be found when revisiting this guide.
3) Follow the web guide or, if chill with it, simply copy the old binaries (all of "Copy 2 SD Root" folder) onto the root of the SD card.