Access to and modification of almost all files in the mobile phone operating system can be achieved by obtaining Root permission through third-party software, but this operation may affect the stability of the mobile phone, resulting in human failures such as crash and restart. In addition, after obtaining the license, it will generally cause defects to the main components on the motherboard such as memory and CPU. Root belongs to modifying the operating system software, which is not covered by the warranty according to the regulations. In order to improve customer satisfaction, free firmware upgrade service is provided to Root customers. If Root affects the mobile phone hardware and needs to replace the motherboard, the motherboard fee will be charged. If your machine needs to be restored to the original system version after Root, please send the machine to the service center, and the after-sales engineer will help you check and handle it. You cannot revoke Root privileges by restoring the device to factory settings.