Enable Developer Options by tapping 7 times under Settings > About Phone. Toggle on USB Debugging inside the Developer Options menu.

Execute this command to delete the account client package manually: ./adb shell pm uninstall -k --user 0 com.osp.app.signin Use code with caution.

Watch the log output window; it will say "Resetting Reactivation Lock... OK" or similar status confirmation. The phone will automatically reboot. Alternative Solutions Without Professional Hardware

Open a PowerShell command prompt window on your PC inside your ADB directory.

Official PC drivers installed to ensure proper virtual COM port detection.

Restore the core platform binary to sign in with your clean account credentials: ./adb shell pm install-existing com.osp.app.signin Use code with caution. Official Password Reset Verification

The Galaxy S5 runs on older Android architecture (primarily Android 4.4 KitKat to Android 6.0 Marshmallow). This older architecture is susceptible to certain exploits that Z3X utilizes.

If you do not own a Z3X box or the above fails, consider these alternatives for the Galaxy S5: