Unable to factory reset

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New member
Mar 17, 2021
Samsung Galaxy J5
My friend gave me a Samsung SM-A515F that he bought because he wanted to do a factory reset and could'nt do it because the option was disabled in the settings. The first thing I did is going into recovery mode but there is'nt any option to wipe data. Clicking "reboot to bootloader" option just make a system reboot so I can't go with fastboot. Viewing several howtos I tried to go into Download mode but I did'nt manage to so I assume that it's also broken. And finally, adb show device status as "unauthorized" when using it in recovery so I can't hard reset from there.

Any ideas or suggests would be really helpful,
Thanks a lot