Sony PXW-FS7 Manual page 7

Firmware Update Procedure: PXW-FS7
4. Update the System Software
Execute the System Software Version Update
Caution
Please use the AC Adaptor (AC-NB12A) during the system
software update.
If the power of the camera turns off during the system software
version update, the camera might not work properly. Please
make sure the cable of the AC Adaptor does not detach.
If the media card is ejected during the system software version
update, the camera might not work properly. Please do not eject
the media card during the system software version update.
After the Update is completed the camera returns to the default
factory settings.
1. Insert the media card (SD/SDHC) for the system software
version update, and turn the POWER ON by turning the
"POWER" switch.
November 2014