Goal:
I would like to do OTA updates to a MT3620 Seeed Studio dev-board only over ethernet.
Hardware:
Azure Sphere MT3620 Development Kit_US Version
MT3620 Ethernet Shield v1.0
MT3620 Grove Shield
Azure Sphere OS: 21.07 Update 1
Azure Sphere SDK: 21.07.2.14662
Problem Description:
When Ethernet Shield board image is sideloaded over USB, Ethernet runs nominally
1. Device enable-development
2. enc28j60-isu0-int5 board configuration image is sideloaded over USB
3. eth0 shows up on interface list
4. eth0 can be enabled
5. When WIFI is disabled, eth0 secures its own IP address
However, when I set up an image to Product/"Field Test" which contains images for <blinky.imagepackage> <enc280j60-isu0-int5.imagepackage>. I get a different result.
1. Device enable-cloud-test
2. (( Software on device cleared ))
3. (( Software downloads over WIFI ))
4. Images for blinky and enc280j60-isu0-int5 both show up on device image-list
5. But! eth0 is not present on the interface-list.
What could be changing between "Development" and "Field Test" to have ethernet stop working?




