Aaron: finally got an update. Thanks for the info. I posted the question because all attempts to update failed. Failed 7 times today. Failure appears to be caused from server. T3 now shows firmware as 4.0.00-200818. Not sure if I should disconnect from Netview because the bottom line on the screen has a checkmark followed by "Firmware updaiting" (sic). Been that way for an hour+. Assuming the checkmark indicates update was complete.
There should be "update complete".
I could be wrong again, but I think the bottom line of Netview always shows the last command executed. If there's a checkmark, it should be all done. I'm going from memory here, but I'm pretty sure that last command just stays on the screen, even after it's done.