udpate has reset my world

My main world has been reset on my xbox 360 few month ago, on the 28th october 2016. A new update was available but i did not do it because i just wanted to show my world to a friend of mine. Then, my world has been reset so i close it out without saving and i made the update which was useless because my world is still reset. Moreover, there is something weird, on the picture showing my last save we can see a place which belongs to my world before it got reset (im gonna let a picture below). Since this happened i stopped playing minecraft but i made all the new updates with the hope of getting back my world. It didnt happened, this is why I hope you could help me and understand my problem despite my bad English.