Hi, I'm currently planning to upgrade my flash 2 to marshmallow through SP flash tool. I've already managed to install and connect my phone via mtp. I've also managed to install the driver when my flash 2 is connected to my laptop when it's being turned off.
However, when I tried to connect via USB, it kept failing to install the driver. So I couldn't connect my phone via USB, as well as tethering USB.
My question is, in order to upgrade my flash 2 to marshmallow OS v1.7 with SPFlash Tool, do I need to be able to connect my phone through all the connections (mtp, USB, USB tethering, turned off).
I'm using Windows Vista by the way. And I've also already tried to install many drivers for flash 2 from this website.