Update problem - Ubuntu 64-bit version

[stueyboy]

Hi, probably may have been addressed before but can't find a similar thread.
I'm having problems updating my Tonido server software. I'm on Ubuntu 16.04 64-bit version and current Tonido version is 14.90.0.34042. For some months now I have had the update available notification in the software and every time I click the update, I get the application update message and then nothing appears to happen. I usually end up having to reboot and restart Tonido.
Is there a command line way to update as this would be preferable. Alternatively, advice on how to get the update to finish woudl be appreciated.
Thanks