08sv80, Add this method is not a problem, but it needs another list that you need and, most importantly, can be disabled. For each model, it will differ something. In addition to system applications in / System / App and / SYSTEM / PRIV-APP, the OEM section has also added.
For the sprint, I would also write, but you will have to frozen, because I did not make it, everything was cut in nature and did not write. You need an image of the full system to convert. In general, you need to do this.