Hey, I am looking for some advice on a feature I used to prevent my iphone from updating all the time. I used to be able to go to settings-general-iphone storage and delete any ios updates that were downloaded on my phone while it was plugged in and connected to wifi. Since I updated to ios 11.01, I cannot delete the updates anymore (which are like 1GB plus on my phone). I hit the red delete update button and the phone returns to the previous screen without deleting the update. I have attached a screen shot of the problem. Any ideas on how to fix?