Upgrading a CMG-NAM using a USB stick

Requirements

A USB stick prepared with the CMG-NAM, CMG-NAM64 and/or CMG-NAM-mk2 firmware.
Command line access to the NAM (either serial cable or ssh).

Procedure

Do not connect the USB stick at this time.
Log in to the NAM as root.
Issue the following commands, which will switch off automatic disk access. Ignore any errors or messages:
```
svc Pt-storage stop
svc rdisk stop
```

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

dmesg

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: [sdc] Write Protect is off
sd 46:0:0:0: [sdc] Mode Sense: 43 00 00 00
sd 46:0:0:0: [sdc] Assuming drive cache: write through
sd 46:0:0:0: [sdc] Assuming drive cache: write through
 sdc: sdc1
sd 46:0:0:0: [sdc] Assuming drive cache: write through
sd 46:0:0:0: [sdc] Attached SCSI removable disk

Use the token sdc1 (or whatever it is called on your system) in the commands below.

Mount the USB stick with the command:
```
mount -o ro -t ext2 /dev/sdc1 /mnt
```
If this does not work, try the following:
- Ensure you have waited 10 seconds
- Try changing ext2 to ext3 or ext4
If this still fails, the unit will need to be upgraded by some other method.
Run the command:
```
/mnt/upgrade
```
Reboot the CMG-NAM.