NOTE: The original guide is completely outdated now. Just use Decrypt9's 'keep a9lh' option to flash emunand backups to sysnand and you're good to go.
But if you really want to use this guide as currently written for some reason, here it is I guess:
The Easy Way to Swap your Sysnand and Emunand (A9LH ONLY)
But if you really want to use this guide as currently written for some reason, here it is I guess:
Warning: Spoilers inside!
The Easy Way to Swap your Sysnand and Emunand (A9LH ONLY)