The Rev.2 firmware update that Andy has listed on his site is working great and fixed a problem I had been having with the tour function. Now, an activation of IVS from any camera will bring the image up full-screen. It's a great feature to have in my setup at home. Before this update, and using the Rev. 1 firmware, only SMD would work correctly with the tour.
The name of the update: General_NVR5X-EI2_MultiLang_V5.001.0000000.2.R.260605
The name of the update: General_NVR5X-EI2_MultiLang_V5.001.0000000.2.R.260605