Here was the responses from Sony on firmware upgrades:
The PMW-EX1 will need to be at a minimum firmware level in order for “user” upgrade.
In the Maintenance Menu, the IF Menu will show what firmware is currently on the camera (Menu Button, Menu Wheel, and Cancel at the same time). The PMW-EX1 will need to be at v1.05 (at least) to allow for upgrading.
The firmware needs to be performed in increments; if at v1.05 go to 1.1x and then 1.2x and then 1.3x. Do not use battery power and read the instructions carefully!
Please following FTP server to access the firmware:
65.196.27.198
Usrname: pmw-ex1
Paswrd: sony
I have version 1.03 on my seldom-used EX-1, so Sony says I can’t upgrade unless I send the camera to them. Too much time and money ($300) just to use two cards.
I will wait for my main camera to return.
Terry Barner
Senior Video Producer
Missouri University of Science and Technology