T20P cant upgrade from firmware 9.3.23.1

[alcocraig]

The carrier we use is voipfone.co.uk
I checked our other 4 phones in the office this morning and you are correct their firmware reports as two digits after the 9
9.60.23.16
9.60.23.16
9.61.0.85
9.61.0.85

Which were all bought from ebay 2 at a time, approximately 12 months ago, when we started expanding.

Unfortunately the one on my desk is the one with the weirdness.
My phone Details
SIP-T20P
Firmware Version 9.3.23.1
Hardware Version 7.0.0.1

I have tried the closed network using a standalone switch, static ip for my laptop.
I did a factory reset on the phone and configured it for static ip address also.

I tried both firmware versions 9.73.0.40 and 9.61.0.85

Both end up with the same message as before Talking!