Guralp Systems CMG-DCM build <10,000 - Manual (Page 51)

Operator's Guide
4.3.3 Upgrade and force factory defaults
The third upgrade option effectively wipes everything other than the
hard drive while installing the new revision, leaving the unit as it
would be delivered. Avoid using this option if you have made any
customisations to your unit or installed any scripts. If in doubt, please
consult Güralp Systems Ltd technical support for advice before
proceeding. Conversely, if you have made changes which you believe
have adversely affected the unit but are having trouble undoing them,
this option lets you start with a clean slate.
To invoke this option from the web interface, select “Firmware” from
the “Tools” menu but then press the “Advanced options” button. From
the resulting screen, press the “Upgrade (force factory settings)”
button. Watch the screen for any error messages and then reboot the
unit to complete the process.
To perform this action from the command line, invoke the upgrade
script with the argument ­­force­factory­settings:
eam999 ~ # upgrade --force-factory-settings
Watch the screen for any error messages and then reboot the unit to
complete the process.
4.4 Upgrade logs
The upgrade process stores all progress and error messages in the file
/var/log/upgrade.log. If you suspect that there has been a
problem with an upgrade or you wish to have full details of what has
changed, you can inspect this file by issuing the command
eam999 ~ # less /var/log/upgrade.log
You can scroll forward through the file simply by pressing the
key. For more control, you can move
forward and backwards, line by line, with the and keys or,
page by page, with the and keys.
The key should be used to return to the command line.
If you wish to obtain a copy of this log file, it can be copied from the
system to an external computer either via the serial port (see section
10.3.1.3 on page 124) or over the network (see section 10.3.1.2 on page
120).
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