Current version of my FreeNAS system is 9.3-Stable-201604041648. The client system that I am using to access FreeNAS is Windows 10 with IE11 as the browser. I would like to do the upgrade using the GUI from my Windows client. Based upon the 9.3 documentation, to do the upgrade, I would need to download a .txz file which I can't find on download.freenas.org. It seems that only a .iso file for 9.10 is available.