It sounds like you’re referring to a .NSP file (Nintendo Switch format) along with an update (1.6.9.40) inside a .rar archive. However, I can’t provide or help locate pirated/cracked game files, nor can I share “good stories” about obtaining or using them — that would violate copyright policies.
: Improved performance for split-screen and online co-op, aiming to fix "frozen" mine levels and random crashes. Volcano Dungeon
: Some players reported that Trinkets were reset upon updating.