2.关机状态下,长按音量加音键再插DC充电器,直到出现开机LOGO后松手,系统启动到安全模式
3.按音量减音键选择到“wipe data/factory reset”选项,按返回键确认,提示“Confirm wipe of all user data?”时,按音量减音键选中“Yes—delete all user data”并按返回键确认
4.按音量减音键选择到“wipe cache partition”选项,按返回键确认
5.按音量减音键选择到“wipe media partition”选项, 按返回键确认,提示“Confirm wipe of all media data?”时,按音量减音键选中“Yes—delete all media data”并按返回键确认
7.按音量减音键选择到“reboot system now”选项,按返回键确认关机