Hi @Terry,
I did exactly how you wrote but still could not update.
I received popup window whit text about waiting or preparing … (did not tak a pic of it) then on second click on Update button vim2 started to shutdown and stayed with that for couple of minutes and nothing happen so I just power off with button. After that vim2 booted. So I could not update by system update.
Could you please try/check my build for vim2 Nougat?
S.