The refers to a significant unofficial software patch released by the scene group RELOADED in September 2017 . It was designed to bring the "Smuggler’s Run" content to players using the RELOADED version of the game, which is a common pirated distribution. Report on GTA V Update v1.41-RELOADED
DLC content. This was a massive official expansion that introduced: Underground Bunkers: New purchasable properties for illegal arms trafficking. Mobile Operations Centers (MOC): grand theft auto v update v141reloaded
You need the base "Reloaded" release of GTA V (v1.0.350.2 or v1.0.372.2). Do not use a Steam or Epic installation—the file structure differs. Grand Theft Auto V Update v1