Hi there and happy new year to all of you !

I need help choosing the right files for flashing my phone (SE C702).
So let's say I want to flash it to FW version R3DA029.

So I go and download:
C702_R3DA029_MAIN_GENERIC_NG_RED52.rar
because I don't need the China, Hong Kong or Taiwan versions,

then I download:
C702_R3DA029_FS_ADRIATIC_RED52.rar
because the "Adriatic" version contains the languages I need

but then I have no idea what customization files to download from:
Top Sony Forums

When looking at their names, they looks to me like they are used for some kind of local mobile operators.
I need the "general"-like files for non-branded phones.

Which one I should download and why ?

Thanks in advance!