So about a week and a half ago I got a message saying I need to change my iPhone 6 passcode within 60 minutes. I did so from a 4 to 8 digit passcode. No problems until a couple days ago when i plugged my iphone into my mac to charge and I got a message saying that there was an update available for my iphone, even though I checked and it's up to date. I checked "do not ask me again" last time but it still popped up this time, and I just got the change passcode within 60 minutes message again, which is why I'm concerned. Is this a bug or is there a problem, if there is how do I fix it?