Like previous versions (1.1–1.4), version 1.5 includes cumulative fixes for older issues, such as the Lumiose City save glitch and GTS communication errors. Installation for Decrypted/Emulated Systems
Increased detection for "unauthorized data manipulation" in competitive play to maintain game integrity. Pokemon Y: Update 1.5 [Decrypted] 3DS (EUR/USA)...
Official patch notes from sources like Serebii and Nintendo Support highlight the following: Like previous versions (1
is the final official software update released for the Nintendo 3DS title. While the eShop has largely closed, game updates like this remain available to download for users who own the software. Update Overview Release Date: April 22, 2015. Like previous versions (1.1–1.4)
Official updates can still be found by searching the Nintendo eShop on a 3DS system. For homebrew users, repositories like hShop often host these files.