I inherited a jailbroken 5s. I don’t want those features. Will updating iOS remove jailbreaks? Updating to iOS 8 doesn’t work – I get stuck on a grey screen… Martine Braund Updating iOS removes any jailbreaks already installed, which is why most of the modern jailbreaks like Pangu and evasi0n turn off the ability to update your iPhone ‘over the air’. But you can still update through iTunes. Just connect your phone with the USB cable to a computer running iTunes, click the devices icon on the toolbar, select the phone and click ‘Check for Update’.