During the active phase of the Advance Server for OB37, the ff-advance.ff.garena.com domain hosted the client versioned as 1.101.x (exact build numbers vary by patch).
Once the testing period ends, the server shuts down permanently. The website now redirects to the latest OB version (likely OB60+ as of 2026). OB37 APK files are obsolete and cannot connect. ff-advance.ff.garena.com ob37