You can also try dr.fone - Android Lock Screen Removal to bypass pattern, PIN, password & fingerprints for Android devices with NO DATA LOSS: \r
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Warning! Do this at your own risk! All your phone data (conts,photos,videos,music,messages,aplications,games,files,) will be lost! Please make backup first if you can!\r
1.Power off your tablet\r
2.Press together volume up + power button until Samsung logo appears on screen\r
3.Select with volume buttons wipe data/fory reset and press power button to confirm\r
4.Select yes with volume buttons and press power to confirm\r
5.Wait until format ends\r
6.Press power button confirm reboot\r
7.Wait until the tablet restarts\r
Thats it!