hi there,
couple things --
1) 10.1 and 10.3 are EOL code, so I would highly recommend upgrading to the current recommended for your platform (IIRC its 11.4R5.7 across the board for EX)
2) The firmware update I believe is needed for it to transparently and automatically boot to the alternate partition in the event of a corruption, but if the corruption occurs you still have to do the request system snapshot command to get the now-corrupted partition back to normal
I believe in either 12.2 or 12.3 they improved things where if that happened it would automatically snapshot it for you, but I haven't seen it / tried it.
Will