Free Fire Advance Server APK (ff-advance.ff.garena.com APK) is basically a beta version of Free Fire that will allow you to enjoy some of the latest features of the game before anyone else. Here, you'll find all the new skins, all the weapons that haven't been released yet, and all the changes that will eventually make their way to the standard version of the game.
The latest version is: Free Fire Advance Server OB36 APK
In order to play Free Fire Advance Server, you need to get an activation code, first. To get this code, you'll need to go to the official website (https://ff-advance.ff.garena.com) and sign up using a valid email address and telephone number. It's important not to share the activation code with anyone, since each one is unique and personal. It is also important to keep in mind that access to the Free Fire Advance Server is limited, so you may not receive the code for several days.
Free Fire Advance Server lets you enjoy the same battle royale experience that you're used to, but with tons of new features that will surprise even the most experienced players. That said, all the progress you make in the Free Fire Advance Server won't carry over to the standard version of Free Fire.