Guralp Systems CMG-DCM build <10,000 - Manual (Page 48)

CMG-EAM (Platinum Firmware)
Connect the firmware pod
If you are upgrading a CMG-EAM, CMG-DAS or CMG-DCM, the
supplied cable (CAS-DCM-0038) should be attached to the 6-pin mil-
spec USB connector of the module. The firmware pod is then
connected to the end of this cable.
A CMG-NAM unit has standard USB sockets and these can be used to
directly connect the firmware pod. Please note that, depending on
internal cable layout, it may be necessary to connect the firmware pod
to a USB socket on the back of the device (near the network socket)
rather than to one on its front panel.
Once connected, it will take a few seconds for the device to be scanned
and registered by the operating system. You can confirm this by
looking for USB mass storage registration entries in the system
logfile, /var/log/messages.
Mount the filesystem
Once the firmware pod is conected and registered, the filesystem
should be mounted by entering the following command:
mount -t ext2 -o ro /dev/disk/by-label/Pt-firmware /mnt
Run upgrade script
Once the filesystem is mounted, you can run the upgrade script. This
is not the same script that is used for network upgrades but it takes the
same optional arguments. These arguments are documented in section
4.3 on page 49, which should be read before proceeding.
Once you have decided which argument, if any, you wish to use, run
the script with the command:
/mnt/upgrade optional_argument
Ensure there are no error messages and then reboot the device. Once
the unit has rebooted, the upgrade process is then complete.
48 Issue C
Note: Some early Platinum releases only had ext3 filesystem
support. If this is the case, the above command will result in an
"Invalid argument" error message. If this occurs, simply change
ext2 in the above command to ext3.