How do I update Moon??

[Usagi-Zakura]

Moon won't go online, it says I need an update and tells me to download it from the eShop... but I can't find it. Usually the previous games have just given me the update straight from the main meny before I turn the game on but not this time.
This is the cartridge edition by the way...

 

[Usagi-Zakura]

Never mind. I found it in my eShop-settings.