I recently bought a Dreambox DM 7020-S

The User's Manual explains how to update the software (firmware) using the Setup/Expert Setup/Software Update option.
I do not seem to have this option on my system, instead I have a "Factory Reset" option.
Does this mean I will not be able to upgrade my box to future software releases?

I have looked at the DreamUp Software on your Website and there is no "Backup" button, yet the screen shots of this software in the User's Manual DO contain a backup button.
Does this mean I cannot make backup images of my firmware? (or is there a "Linux" way to do it?)

Lastly, there is no documentation in the User's Manual about how to use a memory stick in the USB port? How do I do this?

Many thanks for any help,

Louis O'Dwyer
Geneva
Switzerland