Generally in the pick up of the phone for the brush, through the professional equipment repair store dedicated to the use of the model dedicated brush tutorial for the model brush introduction to brush, but also through the model of the professional repair store for the brush, but also consult the model of the professional store customer service to brush.
Preparation before brushing:
The phone will be fully charged as much as possible (at least 50%), which can solve some of the problem of power display error.
i brushing steps:
1, the phone into the dfu mode, steps: boot state, with a data cable and computer connected. First, press and hold the shutdown button for 2 seconds; then, press and hold the shutdown button and home button at the same time for 8~10 seconds; finally, keep holding the home button for 15 seconds.
2. Check if you have entered dfu mode correctly: In dfu mode, the phone is on a black screen. If it didn't work, please re-do the first step.
3, into the DFU state, iTunes test to be in a state of recovery of the phone, at this time you can see there is a recovery button, at this time you hold down the keyboard's shift key, and then the left mouse button click on the "Recovery", there is a window to find the path to the firmware, and then double-click on the firmware you have downloaded, and then iTunes will be automatically recovered, the process! Don't pull out the cable and wait for about 10 minutes.
4, iTunes recovery is complete, a window will pop up roughly the content of the device has been recovered, the window will be automatically closed in 10 seconds, close this window, and then unplug the cable, do not use the computer to activate the device, activate the system in the cell phone terminal will be more pristine.