Here is the system dump from Galaxy S8.
It includes app, priv-app and media folders.
Tried some apps in S7 and they install and work very well.
Install as normal APK. No root needed for most of the apps.
Do not install Contacts app, it will prevent you from receiving calls.
To install the new AOD, you must clear data and cache for it after install, otherwise it will crash.
Do not install Camera - it will crash sometimes.
Wrongly installed updates can be removed with Package Disabler Pro by clicking on the app name and selecting Silent uninstall.
I take no responsibility for any damaged, crashed phones and/or lost data.