Just find bob finless give another root method on amlogic s905 device, i just tried, it can also work on Vega s95. here is the instruction:
Download the root file here to your PC (not vega s95)
Unzip the file and put the 3 files on a SDcard.
Insert the SD Card to your Vega s95
Launch the “update&back up” app, click select button, and choose the ezroot.zip file in your SD card, and click update.
After install the update, the vega s95 will reboot, and after that, you will have the root on S95.