mobile

Hi guys I set up my wife's s6 and while trying to use helium backup to restore done apps without rooting her phone. I restored the icons to the new phone and now it won't stop force closing. I installed a third party app. But she really wants touchwiz back because of the widgets.
The help I need is,
Is there a way to reinstall the app?
I've tried with one I found online but it won't install because it won't overide a system app. I didn't know if there was a way to force it and if someone could post am apk of the launcher to try that one also.
Thanks,