Flashing your phone will wipe all data. Back up your photos, contacts, and files before starting. This process is for the TA-1095, TA-1096, TA-1097, TA-1113 (Global), and TA-1100 (US) models. Flashing the wrong firmware can permanently brick your device. Part 1: Understanding Nokia 7.1 Flashing Unlike older Nokia phones, the HMD Global Nokia 7.1 uses Project Treble and seamless updates (A/B partition scheme). You cannot use old tools like Odin or SP Flash Tool. The official method is Nokia OST LA (Online Service Tool) or the community tool Nokia X Firmware Tool .