オリジナル投稿者： JOSE PEDRO ,
Download to your PC, Software Updater and PC Companion. Install it and follow the steps of the settings wizard to connect it. Charge the battery full, remove sim card and memory card, and try to reinstall the operating system. (Repair / Fix option). This will remove all data in your terminal and restore factory settings, be careful and do it at your own risk. That solution should restore the system and make it works.