Because version 3.9 is no longer the "retail" live version (which has progressed to 8.x and above), finding a "full client" typically involves private server projects or development archives: Private Servers: Projects like Elyon Aion Beyond Aion
The short answer is
Below is a blog post covering why this version is so popular and what the "full" 3.9 client offers. aion 39 client full
: If you are adding a new UI interaction, you must define how the client communicates with the server. This requires capturing and interpreting packets using tools like Wireshark or built-in packet sniffers in server emulators. Database Schema Updates Because version 3
The Aion 3.9 client, also known as the "Full Client," refers to a version of the Aion game client that has been modified or emulated to run on private servers. Aion is a popular MMORPG (Massively Multiplayer Online Role-Playing Game) developed by NCSOFT. Database Schema Updates The Aion 3
Extract all parts into a single directory. It is often recommended to use the setup.exe file rather than manual extraction.