Use APKPure App
Get Jmz Demo Mode (ROOT) old version APK for Android
सिर्फ एक app Marshmallow उपकरणों पर डेमो मोड प्रबंधन करने के लिए
This app lets you manage all options for Demo Mode on Android 6 (Marshmallow) devices.
Only needs Superuser access and internet. No additional permissions required.