@sunny-lau
Thank you so much for this post, it gave me a new idea.
I also have an unresolved Wifi issue and now I think the reason of my problem might be similar.
BTW when you turn on that Iphone AP and try to scan Wifi with your Omega2+ you would see this on the serial console
[ ...] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: 8771d944
[ ...]
[ ...] Rebooting in 3 seconds..
and after that your Omega2+ goes into a frozen state.
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