There are 2 options for updating euroNAS Software :

a)

1. Copy the update file on one of the shares (root folder)

2. I the administration gui select "System" - "OS Update"

3. Select the share on which you have copied the update file

4. Update tool will automatically find the update files - select the the one that you wish to update with

The share needs at least 150 MB of free space

b)

Download the latest version from the internet, boot from it and start the installation with the command "setup"

Your existing installation will be automatically recognized and you will be offered the option to "update"