Hi again,
Managed to create full back up with TS_BackUpIMG01_VUduo_USB_bh.tgz
Thank you very much!
Took about 7 mins to back up to HDD.
I selected "back up" in Duo menu and went from there.
Then I found the backed up files in: hdd/vuplus/duo.
I then put the files on a USB and restored to my other Duo.
I have a complete clone of my working system now.
Thanks again.
Regards,
Jules.