Hello Michael, if you have the original XR1000, the latest firmware update would be 1.0.0.68 (https://kb.netgear.com/000065541/XR1000-Firmware-Version-1-0-0-68).
As I understand, Netgear released newer hardware (XR1000v2), which is not the same as the original XR1000. The 1.1.0.16 firmware corresponds to the v2.