don't brush p>boot.img If I brush it in, I won't be able to surf the Internet and there will be no vibration. Only when I brush it back to the original kernel will it be ok. I unlocked it according to the method of this website and root it. You can also try to unlock it in that way and then use the software root.
Disadvantages after p>root: There is no warranty (the licensed products and parallel products are unclear), so it is easy to delete system files by mistake, and the stability and security of the system are threatened. It seems impossible to upgrade, but you can brush it yourself. Those who haven't brushed the system say that
the purpose of my root is to uninstall junk software and reduce background running. Play with the brush machine slowly.