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. Please see Preparing a USB stick for upgrading Platinum modules for preparation details.
Command line access to the NAM (either via a serial cable or using ssh over the network).

Procedure

Do not connect the USB stick yet.
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
```
Connect the USB stick.
The kernel will automatically assign a name to the USB stick: this will be sd (standing for SCSI disk - an historical legacy) followed by a single, lower-case letter identifying the device. 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: [sdc] 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
```
In this case, the kernel has called the device sdc. The first partition on the device is identified by the device name followed by 1 identifying the partition number. Replace the token sdc1 in the command below with the partition name that was allocated on your system.
Mount the USB stick with the command:
```
mount -o ro -t ext2 /dev/sdc1 /mnt
```
If this does not work, try the following:
- Wait 10 seconds and try again, allowing another ten seconds for the kernel to recognise the device and assign it a name.
- Try again, changing the filesystem type from ext2 to ext3 or ext4
If this still fails, the unit may need to be upgraded by some other method: please contact support for assistance.
Run the command:
```
/mnt/upgrade
```
Reboot the CMG-NAM.