You can try this http://www.cultofandroid.com/45466/manually-install-the-android-kitkat-update-on-nexus-4/
Does other applications work through the wifi?
So far no issues with icons disappearing. I do somethings have a issue with the OK google not working on the home screen. But I go to the Google now screen and then back to the home screen and OK google works again
Try to install Samsung Cares app.Has some self diagnosis info. https://play.google.com/store/apps/details?id=com.samsung.cares.global&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5zYW1zdW5nLmNhcmVzLmdsb2JhbCJd
Get dropbox and use the auto upload. then install dropbox on your pc. when you are connect to wifi drop box will auto upload your photos. Then you can get the photos on your pc and you have a backup in the cloud.
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