Install git (if you don't have it)
- Any git version should work. For example https://git-scm.com/download/win
- Let Studio know where is git.exe located: File - Settings - Version Control - Git
Selecting branch
- If you want to change branch select another branch from tray: master (latest release) or dev (developement version)
and then checkout
Updating branch from Github
- Press Ctrl+T, select Merge method and press OK
On the tray you'll see green message about updated project
Upload to phone
- Connect phone now
- Press "Play" button on top toolbar
- Select connected phone and press OK