I figured it out (for me anyway)!
The instructions seem to indicate that the screen on the X70 will turn off:
Note: When the camera is connected to the computer, the LCD screen of the camera turns off. Please proceed to the next step. If the LCD screen of the camera dose not turn off, please try the following methods.
– Disconnect the USB cable and connect it again.
– If the computer has multiple USB terminals, try with the other terminals.
Mine camera just kept the Mass Storage do not unplug prompt. What I ultimately did was to press the NEXT button, then the screen turned off and the “follow instruction on the computer” prompt appeared on the X70 screen. Then the RUN button ran the upgrade.
Given the warning that the camera could be bricked if the instructions were not followed to the letter, I wanted to follow to the letter.
Anyway, hopefully the above scenario will eliminate others anxiety.
Cheers,
Jim