As of last year, due to a mix of Google Play policies and Android updates, if you're distributing an app on the Play Store, the only way to rollback is an unins

As of last year, due to a mix of Google Play policies and Android updates, if you're distributing an app on the Play Store, the only way to rollback is an uninstall + wipe user data. ---- * You cannot downgrade to a lower `versionCode` & `versionCode` is defined by the developer * Android 11 prohibits writing to 'permanent' storage of the phone, with the exception of media, or using the `DocumentFile` API, which treats a local folder as cloud storage. `DocumentFile` is unusable for many use cases * A developer can set `hasFragileUserData`, which should ask a user if they want to wipe their data on uninstall. There are Google/Android bugs which mean this dialog may not be shown * If an app is uninstalled and the user doesn't delete data, Android blocks a downgrade to a lower `versionCode` * You can use a regular java.io.File if you request `MANAGE_EXTERNAL_STRORAGE` * Google Play only grants `MANAGE_EXTERNAL_STRORAGE` in exceptional circumstances