Download iOS 10.2.1 Build 14D27 IPSW Firmware Restore Files
Download the IPSW iOS 10.2.1 (Build 14D27) firmware file released at 23 January 2017 intended to restore iPhone 7 (GSM) via iTunes. IPSW iOS 10.2.1 build 14D27 is unsigned by Apple to update Apple device software.