Plz tell me when will i recieve oreo update in my j7 max plz reply soon

hi sir i cant update my dp from gallary i hv 2 go to watsapp for this..plz sir help me out my model is j7 prime nd after software update it hangs a lot plz do somthing

hi sir plz add music app saperatly in j7 prime....gogle play store is boring plz add music oppo vivo every phone has it but my ph dont have music...its sad  plz give muzic in next update sir i always use samsung this my 5th phone of samsung m a re...