Know this is an old thread but my n3ds ruining Luna and B9S never got a notification that there was even an update. I didn't realize it till yesterday when I tried to update a game and it told me I need to update, bit still I don't get like a update reminder Everytime I boot. What's up with that?
Also, since I think I saw someone ask this but they didn't get an answer, if there ever was a issue with a update using the Nand backups made in B9S or a9lh can we roll back firmware by restoring those backups? Always assumed you could.