Specifications: Type: Brush Line Model: W230 Material: TPE Length: Approx. 0.9m , 1yd Color: White Weight: Approx. 37g Compatible Model: All foR phones with BL lock and for CPU , for4S ,4C ,4i ,5 , etc Package list: 1 * Brush Line Using Method: 1. The first method: Turned off the phone , insert the line , at the same time hold down the engineering line switch the power of the mobile phones and lasts for 5 seconds , the computer will make a sound like inding dongin , that means the device manager has found the Port 9008. The appearance of 9008 port indicates that you have successfully entered the deep brush mode , and then you can solve all kinds of problems by using the brush tool ! 2. The second method: Turned off the phone , press the volume reduction plus and the power to enter mode at the same time , and then press the power to turn it off. When the mobile phone screen turns black , long press the flash for five seconds , then loosen your hand , by this time , the device manager inside can recognize to port 9008. The appearance of 9008 port says that it has successfully enter into the depth of the flash mode , and then use the refresh for the millet flash tool flash point , choose wanted material , then flash again. To solve all kinds of problems one time ! The phone is in black all the time , which is a normal , don't worry.