I've got a small issue here and I'm unsure what I need to do to get up and running again. After setting up an emuNAND for use with ReiNAND, I followed the guide for unlinking my NANDs (formatting the sysNAND with the SD card removed). So, my sysNAND is clean, and factory fresh ;-) I'm now trying to re-install some stuff to the sysNAND but FBI won't let me. I've booted Pasta (via Ninjhax), rerun Ninjhax to get access to the Homebrew launcher, loaded up FBI and am attempting to install BBM only to be met with the "MODULE_NN_AM" and "Database does not exist" errors. What am I doing wrong? There's definitely db files on my SD card, but I'm assuming these are for my emuNAND? Am I being really stupid and have missed something blatantly obvious?  Yes, I'm an idiot. Inside the 'Nintendo 3DS' folder there was a 2nd hex folder containing only an "extdata" folder. I created a "dbs" folder here and within that created blank title and import db files. Booted my 3DS, went to System Settings -> Data Management -> 3DS -> Software and it proceeded to rebuild the databases. Launched FBI and had no problems installing BBM. Don't you just hate it when you make a forum post only to immediately realise what the answer to your question is! So remember kids; if you've unlinked your NANDs you'll have x2 HEX folders inside the "Nintendo 3DS" folder. One is for your sysNAND, the other is for your emuNAND.