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//无法adb remount
adb disable-verity
adb reboot
// Lock If prompted, first for unlock operation, may be carried out as follows
1. Go to Settings, developer mode, open the OEM unlocking option.
2.adb reboot bootloader fastboot mode to enter.
3 connected to the computer, enter the command fastboot flashing unlock, according to the command and then press the key to unlock the volume.
// there are suggested a success
4. After you successfully enter fastboot reboot to restart the phone.
5. After start, sequentially adb root, adb disable-verity, adb reboot
6. After boot adb root, adb remount this time success will prompt:
Then push to normal.
Note: the option to upgrade Brush Brush manner, without steps 1-4, 5-6 can be directly executed.