The one I linked was Portugal version. I linked it because I tested on it. I recommend http://www.modaco.com/forums/topic/375760-vdf-995nb01-uk_mr01d-twrp-flashable-stock-rom-full-lite/ with removed Vodafone bloat.
I will look into that. It would be awesome solution, as only thing I need to modify in system is hosts. And if I ever need to modify anything again I could use the same process. Thanks for your help. Sorry for stupid questions.
What a smart and creative solution! Thanks a lot for all your work and effort. I will post my results. Is it literary switching boot and recovery? If I understand correctly I can flash those zips (using terminal or some flash/zip manager) then boot up with power+vol.up like recovery and it will boot with ability to mount system R/W. I can do modifications then. Do I need to flash it back to normal (which will cause my system to be R/O again right? But the modifications stay) or can I have the phone with switched boot and recovery? I don't care if I have to boot up with power+vol.up. Once again, thanks!
Is there any way around? Lets say I need to change my hosts file. Can I put my own hosts file over the default one and overwrite it from TWRP? If so, how? (Can I generate hosts file with AdAway on different device and use that one?)