The first step to update the device is to copy the update files on a USB stick. The USB stick has to be FAT32 formatted with only one partition.
Copy the correct update files for the device into the root folder of the USB stick. The USB stick may contain other data, which is okay, they will be ignored. You can find the update files in the extracted zip file that you downloaded / got on your USB stick.
There are two ways to start the update process.
1. Via Setup menu (Please use this method)
Insert the USB stick with the update files into the running device.
On the device, go to the menu
User -> Utilities or System -> Utilities (depending on the currently installed version)
and you will see an entry CONSOLE SOFTWARE UPGRADE. Please select this entry.
There will be a warning dialog "Operation Requires Restart". Confirm the dialog by pressing the green checkbox button.
Then the device will restart and the update will be installed.
Please note that the menu entry is only active if valid update files are on the USB stick.
2. Via Service mode (Please DON'T use this method, as licenses and settings can be deleted)
Power off the device and connect the USB stick with the update files with the USB port of the device (both the front USB slot and the USB cable from the main connector can be used).
There are two ways to start the device in update mode, you can use either one of them (but you don’t need to do both!):
a)Connect the clamp “Serv_EN” (service enable) with clamp 15 and 30 and then power on the device.
or 
After some seconds please disconnect the clamp “Serv_EN”, otherwise the update will be done again after restart.
b)Press the left keys 1 and 2 and then power on the device while holding the keys (works only if you have a product version with keys). After some seconds please let go of the keys.
When the update starts, you will see a small bar graph in the bottom of the screen. Once the bar graph is filled, the device will restart and the update was successful.
