How to download older version？
There are no older versions available , I strongly recommend you use the last version above . The previous version don’t have as good results .
Revo Scan V5 is almost here ,so going backward with buggy software will not profit you in any way .
missing face head mode on pc and just only on mobile？
There is no more Head , Face mode , you can use just General Mode , it really makes no big difference, it is all about the distance . No extra settings of any kind that will makes it better .