My original install was usb, then used firmware update button to get into M4, then update with trains and got in to problems. After that, several fresh installs using usb to 9.3 alpha but couldn't get passed the updates. finally fresh install using iso to 9.3 alpha, and one update with iso img to M4 two days ago, haven't been able to give any time to it since due to commitments, I'll try tomorrow(Sunday) and see how we go.