: This term typically refers to a game file (.cia or .3ds) that has had its Nintendo-proprietary encryption removed so it can be played on 3DS emulators (like Citra) or via Custom Firmware (CFW) on a physical 3DS console.
The was the final official patch released for the game on the Nintendo 3DS, launched around April 22–23, 2015. While primarily a maintenance update, it was mandatory for accessing any online communication features during its supported lifespan. Core Update Features
As the 1.5 update includes all previous patches, it also resolves the following critical issues: