Enfold Edit Main Background Image

Hi Enfold,
really sorry for such a stupid question (shame on me, yes)

I’m using Enfold since 2-3 years nows, and do not find where to edit my main background image !!! I’m in Fullwidth layout and he tells me that back ground image can only be chaged for boxe layout???

The shame here, is that I already have a fullscreen background image, but can’t find w-h-e-r-e anymore! :-/

I’ve significantly been improving its compression ratio and would like to put the new one. 45 mn I’am looking for that.

Has anything changed since last version?

Again, sorry. I have to open tomorrow and have so much to de before…

Please help !
:-)