How I say above..... Use one of the method.it not working. After updating it a white screen with letter and numbers on it
Mate obviously you dont backup your site ...so the last thing you can do is to ask your hosting provider if it have one. We can not help you more here.it was updated by wordpress to the newer version
Dont worry is happen to everyone..so we will learn from our mistakes...next time use the updraft plugin, is very good automatically backup plugin.