Thanks Rob,
Ordered the cable $23aud and got the Toyota Techstream v12 software here; https://1drv.ms/u/s!AsNneVhm548Wcc6cRS8q_uRWoZY
You need to extract with Zip or Rar after download to a usb stick and then load it onto a laptop.
It has firmware update for the cable, a PDF of how to install...