I'm not a tech wiz. I'm not totally ignorant either. I have a problem I keep hitting a brick wall with. What I want is really simple - the pic I set for my wallpaper that I previously deleted from my photos. I have a ZTE Z Max I bought 4 years ago. I am not gamer and rarely used phone for browsing. I have been unable to update apps for a while now. I cannot access Google Play Store, get error 491 or whatever number saying have to update Play Services. I have plenty of storage, cleared caches and data, all the usual. I tried from website and got message saying app would be installed later. Nope. I have tried rooting. I got in as developer and removed all security protocol. I really cannot afford taking phone in, somebody tinkering with it, telling me they can't get pic, then charging me for their time. It's just a pic and it's in the system somewhere. I tried using PC to get into files to find it. Don't see any files that look like settings. I downloaded a .exe file for utility but get message saying don't have app to open with. I lose pic if I reset to factory settings. No matter what I do it bombs. Could really use help please. Thanks.