Click the button. Watch the progress bar. Flashing takes 3 to 5 minutes. Do not disconnect the cable.
Unlike standard updates, repair firmware (often called "4-file" or "binary" firmware) can completely rebuild your phone's software from the ground up. Here is how to flash your way back to a working device. Why "Repair" Firmware? g900f repair firmware
Reinstalls the startup code that tells the hardware how to initialize. Click the button