Using Virgin Media SuperHub as Repeater?

[frying_pan_cat]

I've just moved into a new house and the signal downstairs is quite poor (the router is connected upstairs). I have a spare SuperHub as I got a new one tihe the new Virgin Media contract and I was wondering if it is possible to use it as a repeater to improve the signal? I can't see any option in the settings so presumably I'd need a custom firmware from somewhere?

On the back it says SuperHub (VMDG480) if that helps at all

Thanks