how to download mtz file?
["Download the theme's . mtz file to your phone.", 'Install the MIUI Theme Editor app above.', 'Tap on the [Browse] button in the app.', 'Find the MTZ file, tap on it to select it.', 'Tap [OK].', 'Tap [Next], then [Finish].', 'Wait a moment.', 'A message will pop up, choose [Install], then tap [OK].']