[Q] [Dev Help Needed]Restore System Apk

[CCallahan]

I uninstalled the Protips.apk without doing a backup first and now need to restore it so the OTA update completes. I have the file from another Photon but how do I go about getting it installed? I moved it to /system/app/ with Root Explorer but it won't install.

Do I need to push it with adb? If it somehow needs to be re-signed I'm not sure how to sign w/system signatures.

What steps can I use to complete this?

Thanks.