I tried updating my old post, but right now I have a perfectly fine working Emunand on 10.6 with FBI+Homebrew Launcher and my sysNand is 9.2, both are unlinked. Games work online again and my saves, but the only thing I can't do is use the e-shop like I normally would. My NNID is on emuNand, but I'm getting mixed signals on what to do to restore this functionality. (I want to buy Pokemon R/B/Y this weekend)
i see.
since you already found my other post, this is how it works, just make absolutely sure you make all the required backups:
so once you got the unlinking done and used browserhax to install menuhax on sysnand again (to gain access to rxtools and emunand again)
first, you have to update emunand to latest firmware or you cant access nnid anyway.
then you have to make a backup of your current emunand with emunand9 (option is called copy emunand to emunand.bin).
then make a backup of your emunand folder found in the Nindendo 3ds folder (there'll be two folders, and maybe a private folder. emunand will be the bigger one since that has probably games installed in it. if they're both roughly the same size, get a cia and install it in emunand. also note that folders name. or alternatively, just backup the entire Nintendo 3ds folder).
then, you have to format through systemsettings in emunand this time (also dont remove sd card this time, dont worry, it wont format the whole card, only the emunand folder you just backed up)
once thats done, go back into your now wiped emunand, go through the setup and set an internet connection. go to system settings, click the nnid option at the top and set up his old nnid (you need nickname, password and the email adress you used).
be careful, at this point, it might give you an error while connecting to nintendo servers and ask for an update. on rare occassions, going into the nnid settings from emunand has sent me into sysnand for some reason. if that happens, power down, try again.
and once that is done and you exit the system settings, power down the 3ds, go back into emunand9, look for the setting that clones your previously made emunand.bin back to emunand and finally, replace the wiped emunandfolder in your nintendo 3ds folder with the one you backed up.