I think you need what ADB driver or something. Is your MTD enabled? The option can be found inside "Storage" then at the top right hand icon "...", in it you will see 2 tickboxes and one of them is MTD.
Google should find some answers.
You are a great help!
I found MTP, enabled it, and now the USB tether option is un-grayed!
Still, is there a place I can bring the phone for a check on other issues?
