Originally Posted by hoopsdavis
I can't figure out what the issue is. I continue to get stuck on <waiting for device>
If your Command Prompt displays the message "waiting for device" your driver wasn't successfully installed.
Close the Command Prompt window and open Device manager while your phone is still plugged in. (Search for it using the search option).
Right Click the "Android" option and select Update Driver. Choose to "Browse My Computer" and "Let Me Pick From A List." Pick the Samsung driver with the newest date and install it. Now retry the code above.
Your phone will ask if you want to unlock it. Select "Yes" by using the volume keys and use power to select it.
Now, navigate to "Recovery Mode" with the volume keys. Use power to select.
A screen with another Android will pop up. Press Volume Up, Volume Down, and Power all at the same time.
Select Factory Reset. This process may take a few minutes. Be patient and let it work.
Once finished, select "Reboot."
Your phone is now unlocked!