Dear,
Our engineer said the Umi Touch hasn't been rooted, the Android 6.0 is a new system, we haven't break the permission, so we can root it now.
You can download a root check APP to check whether it has been rooted.
Hi thank all for your reply.
I'm going to check with the tool the actual status of hte device and good to know that it's not rooted by the UMI.
Thanks
Roberto