This sounds like a software update has, to be technical, gone wrong.
The V6 has no inbuilt internet connection but uses a wired/wireless connection via your homehub - is this present & correct?
You could try powering the box down at the mains for perhaps 10minutes to break the cycle and retry, but you're likely going to have to call VM Faults to report this. 150 from a Virgin phone, or 0345 4541111 from any other phone.
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