I ended up buying a VXdiag dongle, that connects by cable and Wi-Fi
It took a fair bit of time, probably 4 evenings, to get it working. To a large extent this was because the latest software 2023.10 needs Windows 10, and the instructions were for a Win 7 install
I first of all got a VM working & then did a physical install in a dual boot laptop. This was done in about an hour, most of which was OS install
I was able to access all of the systems I needed to & cleared codes, while also giving some history of the errors
Interestingly, having studied WIS I realised that the illuminated lights in the roof console for the airbags was to confirm that the passenger ones were armed. Twist the switch in th right hand end of the dash & the not armed infographic lights up. So this wasn't an error at all, just an absence of RTM time
Along with the software you do get a virtual Tech II, but I don't think this works on Saabs, I'll have to investigate moew