The high version number is to bypass the rogue 1.2.0 version.

1.2.0 will work but not very well if you want to use iVue. The issue with it is that it has the Send Serial number enabled from the get go which was causing some confusion and issues. Just make sure you fill in all the serial number fields before you try to use it. If you use iVue then you will need the 9.0.21.