Upgrade method: 1. Visit the backend page, Please use your mobile phone to quickly connect to the wireless conversion box Wifi: "CarPlayBox" and enter the password: "88888888". 2. Open the browser on your for and enter the IP address: "192.168.2.1" 3. Click "Access" or "Go" to enter the online upgrade background interface 4. (If you cannot enter, please check whether the Wifi of your mobile phone is correctly connected to the wireless conversion box.) Note before buying: 1. This device is only suitable for original-cars with wired carplay. 2. The for original-car radio comes with Wired Carplay. 3. The for original-car is wireless and Carplay is not supported. Support mobile phone: For Carplay:Supports for and above, and the software version is iOS 10 and above. Input port: USB or TypeC Implementation standard: GB4943.1-2011<br><br>Product model:W1 Product name:Car-to-machine interconnection wireless conversion box Working current:500mA Notice: 1. Please insert the wireless conversion box into a normal charging USB port to upgrade or downgrade the firmware. During this period, do not cut off the power or plug or unplug the wireless conversion box. 2. If the upgrade is abnormal, please turn off the power to make the USB port automatically power off, and then try the upgrade or downgrade again. 3. After the upgrade or downgrade is completed, refit the wireless conversion box into the car's central USB data port. At this time, the device number has been randomly updated, and you need to re-operate the Bluetooth and Wifi connections on the mobile phone. Note: The wireless converter needs to be re-plugged and unplugged every time the light display is adjusted. The picture shows a high-definition rendering, and there is a slight color difference actually received, which not affect the use. Rated voltage:Less than 5V Colour:Black Material:ABS<br><br>Package Contents: 1 * Wireless Carplay Adapter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.