Sound Devices 722 - Manual (Page 56)

722 User Guide and Technical Information
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v. 2.67 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Firmware Upgrades
The 722 uses upgradable EEPROM (electrically erasable programmable read-only memory) to hold
the unit’s operating system software, or firmware. Firmware is the source code which controls all
aspects of the device, including: signal routing, signal processing, menu options, LED’s, controls,
and data ports.
Version Information
During manufacturing the unit’s hardware revision number and serial number are burned into a
protected area of the EEPROM. This information is not modifiable. These numbers are viewed in the
Info:Version selection of the setup menu. Info:Version also shows the firmware version of the
recorder.
The current firmware revision number is also displayed on the bottom right-hand corner of the
Sound Devices splash screen at boot up (v2.65+). The 722 firmware version and unit serial numbers
are written to the data chunk of every WAV audio file generated by the 722.
Upgrade Process
From time to time Sound Devices may issue revisions (new versions) of firmware for the 722. Firm-
ware is user-upgradeable. To upgrade firmware follow the steps below.
1. Download the firmware file from the Sound Devices web site.
2. Transfer the firmware file (it will be named version _ number.prg) to the 722 internal hard drive via
FireWire or onto a CF card. If there are multiple firmware files on the media, the 722 will select the first
firmware file available. There is no provision to skip to the next file. To prevent confusion, ensure that
there is only one firmware file available on any 722 media.
3. Enter the firmware upgrade menu. You will be prompted to search for the firmware file. If a valid
firmware file is present on either the internal hard drive or CF the recorder will prompt if the path is
the proper file to use. Press the Rotary Switch or the tone key to say yes. The 722 will begin firmware
upgrade and validation. Progress is indicated with a bar graph.
4. When the upgrade and verify process is complete, power cycle the 722. On power-up the LCD will turn
solid black and the green LED next to the FireWire port will blink 20 times. When the update sequence
is complete, the 722 will reboot once again.
5. Verify the firmware version using the Info:Version menu.
6. Reset the time-of-day clock to the present time and date.
Firmware upgrades are designed to preserve all user menu settings. As a precaution, we recommend sav-
ing the present state as a setup file on the hard drive or CF. Once a firmware upgrade is complete, restore
settings from this file, if necessary.