I have downloaded the vSphere OVA both 6.0 and 6.1.
After installing I failed to change the qsservice password according to documentation.
The following error appears
"Authentication token manipulation error"
No further configuration possible.
When you put qsservice password and it ask you to change it, the prompt is first asking for the current password and after you insert the current password then it will ask for the new password.
Give that a try and let me know.