Vodafone s6 5.1.1 update no parallax???

Hi guys parallax no longer works on my so 5.1.1 I just updated yesterday. Even if I factory reset it is stuck on this 5.1.1 with no parallax. The only way is to download an external app but I don't want to do this. I paid for an s6 and it should work. Is there any room it will work on? I'm thinking of rooting and installing customer recovery. Can anyone help? Thanks