Hi, manabb
Remove screenlock (pattern lock) as follow way please:
1. Power on the phone
2. Connect usb cables (install usb driver if needed)
3. Run BST software and then go "Samsung" > "Unlock" > Screen Lock
4. Click "Unlock"
VIDEO:
BST-Samsung GT-I9100 Remove Screen Lock Without USB Debug - Support - GsmBest Team
Tips: Contact me with my SONORK if not working.
Best Regards
GsmBest Team