Flashing official firmware using Ultimate Samsung Flasher v1.5 is generally safe if you follow instructions carefully. However, using incorrect firmware or disconnecting the cable during a flash can permanently damage (brick) your device. Ensure you verify your exact device model number (e.g., SM-G998B) before downloading any firmware files.
While often associated with FRP (Factory Reset Protection) removal, v1.5 focuses on the delivery of "Combination Firmware" to enable ADB (Android Debug Bridge) for diagnostic purposes. Conclusion ultimate samsung flasher v1.5
Download and install the Ultimate Multi Tool drivers and the specialized Samsung flasher software. Flashing official firmware using Ultimate Samsung Flasher v1
Monitor the progress bar. Do not disturb the cable during this active write process. ultimate samsung flasher v1.5