how can i perform a factory reset

1:15

5:56

4:25

2:55

5:44

5:36

8:44

4:23

3:14

6:50

4:14

3:45

2:04

20:01

4:43

5:39

7:04

2:26

4:29

7:45

5:04

5:25

5:05

00:58

3:36

3:08

4:56

5:02

4:38

4:20

4:04

3:49

3:33

6:36

6:40

3:50

3:58

3:12

6:45

4:52

7:09

1:27

6:30

2:39

6:22

5:42

7:30

10:54

2:42

3:52

5:56

4:56

2:03

4:25

6:49

2:39

1:16

3:36

8:31

7:06