Users of unlocked iPhones have been warned that the next upgrade for the device will relock their phones and disable any third-party applications that have been installed. The update breaks unlocks–hacks made to allow the iPhone to work with non-authorized mobile networks–done with AnySIM, the popular for-free, open-source unlock utility. The upgrade also disables any installed third-party applications, and breaks the “jailbreak” applications used to install those unauthorised programs.