Do you want to switch to version 7 of Android ? It is very simple.
If you have an older device that has a previous version of Android than version 7 and your device is rooted, you can use this app to upgrade your rooted device to Android 7.
This application requires root permission.
Update To Android 7
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://go.getnew.app/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
