How does pp assistant upgrade ios system?

Steps for pp assistant to upgrade ios system (for example, upgrading from ios 10.2 to ios 10.2. 1):

1. First, install the PP assistant computer client, select the appropriate computer version, download and install it; If there is a pp assistant on the computer, just open it directly.

2. Install the mobile terminal of pp assistant. After the computer is successfully installed, connect the mobile phone and the computer with usb, click Trust on the mobile phone, and click Install Mobile on the computer terminal.

3. Back up the data. After the connection between the computer and the mobile phone is successfully realized through the PP assistant, open the one-button brushing function in the top navigation bar and select the mobile phone device. The display interface is as shown in the figure. First of all, it is recommended to check the "Save User Information" below. The system automatically matches the firmware version that can be checked according to the mobile phone model and the current system. At this point, click the firmware version we need to upgrade 10.2. 1, and then click Download.

4. Download the firmware and keep the data cable connected.

5. Brush the machine immediately. After the firmware is successfully downloaded, continue to check "Save User Information and Brush Machine" in the current page, and click "Brush Machine Now"; Then confirm "brush the machine now".

6, wait for the machine, don't terminate the data connection.

7. The mobile phone was successfully refreshed. This interface is displayed, which proves that the system has been successfully updated and the mobile phone has been updated from ios 10.2 to ios 10.2. 1.