Saving your game in certain areas of Lumiose City can corrupt your save file, completely locking you out of your progress.
While Nintendo often gives broad descriptions ( “Various bugs have been fixed” ), version 1.5 is known to address at least: pokemon x update 15 decrypted 3ds eur usa install
This article will break down exactly what this update does, where it came from, the legal and technical nuances of decrypted ROMs, and a step-by-step guide for installation. Saving your game in certain areas of Lumiose