Rebranding....Vodafone UK

I am trying to switch my OS to the official one supported by Vodafone. In the coming weeks VF UK will be launching wifi calling and I want to get in on that. The problem I have is downloading stock firmware, problem is the firmware also seems to install both German and UK based apps.

Does anyone have any advice to stop this from happening....its not a big problem, I am just concerned I maybe not installing correct firmware, even though I have sourced it from Sammobile.

Any advice?