Tried the Nanocm again but no joy.
Having found the right driver for the dragon diagnostics cable and adapter for EASUnlock I can get it to connect on com port 3.
It starts to intialize but on the rx buffer just get rolling reports of 80 and 26. Looking at the troubleshooting guide it refers to 80 and 28 as failures to sync. Followed the resync process a few times with the same result.
I am reluctant to admit defeat but I think I need professional help on this now unless anyone has any other suggestions.