What I had to do was to install firmware for 9.0.0 which I found at:
Download Center | NVIDIA Developer
where I selected: "NVIDIA SHIELD ANDROID TV 2019 Pro Recovery OS Image" and followed the instructions which can be found on that page.
After the install I upgraded to 9.0.2 in NVIDIA Shield settings.
The issue that remains I think is a Channels Issue. My router assigns a fixed address to the Shield based on the "MAC address" of the Shield. When I reinstalled the Channels Server, the address given to the Server was not the address based on the "MAC address" of the Shield but on the "Internet address" (i.e. an alternate MAC address).
It seems that sometimes Channels uses the "MAC address" and sometimes it uses the "Internet address" but not consistently to identify the hardware. This is the second time I had to change my router fixed address assignments to accommodate the choice Channels makes to identify the Hardware the Server resides on.