Because it was the last "pure" patch. After this, Uncharted 3 introduced microtransactions. Uncharted 4 went to PS4. But 1.09? That was the moment the PS3 multiplayer peaked. It was broken, fixed, re-broken, and then lovingly abandoned.
: Updated the internal skin system to support future DLC with unique voice lines. uncharted 2 update 1.09 download
: Provide a guide on how users can still access this update today on legacy hardware or via the Nathan Drake Collection on PS4 (which includes these fixes natively). Patch Highlights (1.09) Because it was the last "pure" patch