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Upgrading a CMG-EAM using a USB stick



  1. Do not connect the USB cable or stick at this time.

  2. Log in to the EAM as root.

  3. Issue the following commands, which will switch off automatic disk access. Ignore any errors or messages:

    svc Pt-storage stop svc rdisk stop
  4. Allow a few seconds for the power lines to settle.

  5. Issue the following commands, to turn on power to the USB stick. Ignore any errors or messages:

    echo 1 > /sys/class/gpio/USBpowerB/level ioline -L USBA_power -o 1 ioline -L USBB_power -o 1
  6. Connect the USB cable and the USB stick.

  7. Mount the USB stick with the command:

    mount -o ro -t ext2 /dev/sda1 /mnt

    If this does not work, try the following:

    • Ensure you have waited 10 seconds

    • Try changing ext2 to ext3 or ext4

    • Check the kernel log to see what the device was called with the following command:


      In the last few lines of output there should be something like:

      sd 46:0:0:0: [sdb] 15826944 512-byte logical blocks: (8.10 GB/7.54 GiB) sd 46:0:0:0: [sda] Write Protect is off sd 46:0:0:0: [sda] Mode Sense: 43 00 00 00 sd 46:0:0:0: [sda] Assuming drive cache: write through sd 46:0:0:0: [sda] Assuming drive cache: write through sda: sda1 sd 46:0:0:0: [sda] Assuming drive cache: write through sd 46:0:0:0: [sda] Attached SCSI removable disk

      Check that the token in the output, sda1 above, matches the token in the command: /dev/sda1. If, instead, you see sbd1 in the dmesg output, then you should use /dev/sdb1 in the mount command. (This might be the case if your EAM has a Compact Flash module, which would have been allocated sda, forcing the upgrade pod to be sdb.)

    If this still fails, the unit will need to be upgraded by some other method.

  8. Run the command:

    cat /etc/build.version
    • If the version is 3801 or less, run the command:

    • If the version is 10000 or greater, run the command:


    Then reboot the EAM.

For more information, first contact your local distributor or email .