If firmware is locked or pinned on a device it will not change regardless of what the network is set to. A pinned device would simply ignore whatever the network is set to. It won't upgrade, reboot, etc. I also see the full notes in the case. The issue you're running into is due to your spoke having 192.168.1.0/24 as the WAN subnet and you also have the same route available via an AutoVPN peer. The fix is either change your spoke subnet so it doesn't overlap. Or, upgrade to MX 18. If it were me I'd just change the spoke WAN subnet to something non overlapping.
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