Moving between these versions introduces several large-scale DLCs that redefined how the game is played:
The legitimate method is simple: if you own the game on Steam, Rockstar Launcher, or Epic Games, it will automatically update to the latest version (which is now far beyond 1.41, currently around 1.68). However, if you have a physical disc or a no-CD offline installation, here are the standard approaches. Update Gta V 1.26 To 1.41