hi I'm having an iPhone 6 running on iOS 8.4. its working perfect and I don't want to update the version to not cause any slow aspects to the phone. my only problem is with apps I have they ask me to update them but in the App Store I usually get an error that I can't update because my version is not 9 or later. ans thats make a problem cause I can't use those apps right now. my device is jailbroken there is any way to pass this limitation with iOS 9 or later. im remember long days ago I don't share if in iPhone 4 or even the first iPhone this problem could be fix by accessing the about version and change it by ssh protocol. please help me I want to stay on this version but keep my apps running.