Here’s a draft post for Update 1.3.0 - v393216 (NSP) hosted on Megaup. You can use this for a forum, blog, Discord, or game release site.
If you simply want to play version 1.3.0 of your game, consider these legitimate paths:
Title: Update 1.3.0 – v393216 (NSP) [Megaup]
However, the process is not for the faint of heart. Between dodging malicious ads on MegaUp, ensuring your sigpatches are current, and risking a console ban, the casual gamer is better off buying the game and updating it legitimately through Nintendo’s eShop.