Hi, I've tried many times to root my Vodafone Smart Prime 7 Marshmallow (VFD 600) with Android 6.0.1, but just can't find out a working method to do it. I've tried almost every one-click-rooting apps, such as Kingroot, Towelroot or Wondershare's Mr. Fone for my Windows, but none seems to work. They all say that root for my device is still unavailable. I also tried the Poot+Ministro method, with different versions of Ministro, but still keep receiving errors such as "Invalid qt version" or "Ministro can not satisfy your application dependencies". Can you help me out step by step? I'm new on the field, so I still have little knowledge of rooting. Thanks.