extract the zip to sd card somewhere
2. under "system/priv-app" > create a folder called "SnapdragonCamera"
3. give the folder "drwxr-xr-x" permissions
4. copy "SnapdragonCamera2.apk" to that folder and give it "-rw-r--r--" permissions
5. copy the "lib" folder (from the zip you've extracted) to "SnapdragonCamera" folder and give it the same permissions as the parent folder has ("drwxr-xr-x")
6. inside the "lib" folder there is also "arm" folder (give it the same "drwxr-xr-x" permissions)
7. inside that "arm" folder there are two ".so" files - give them "-rw-r--r--" permissions
8. reboot