Sound-devices 722 User Manual download pdf (Page 56)

722 User Guide and Technical Information

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:Versio n selection of the setup menu. I nfo:Versio n 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:Versio n 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.

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Sound-devices 722 User Manual Page 56