Was wondering the same. LVFS still on 3.0.3 and I even tried the USB stick method. Downloaded and extracted the ZIP, ran the whole install process, but after reboot I still get Version 3.0.3
Thought I might be doing something wrong? Anybody got it installed on a non-windows machine?
Edit: Somehow the update with the USB stick method worked with the second attempt. Full history of my little adventure here: [SOLVED] Bios upgrade to 3.0.4?