How to check whether your car is compatible with HESHS CarPlay Dongle?What this CarPlay Wireless Dongle does is turn wired carplay/android auto into wireless. For cars with old system, in order to use carplay, you need a usb cable to connect the phone to the screen. With this box, you just need to turn on your phone's Bluetooth to use carplay without a cable.This CarPlay Android Auto 2-in-1 Ai Box is compatible with most cars with OEM Wired CarPlay/Android Auto System. To see whether your car has this so-called system, you can do as following instructions:Method 1. If you can find a CarPlay or Android Auto icon shown on your car screen, it means that your car has Wired CarPlay or Android Auto Function.Method 2. Use a cable to connect your phone and car screen, if you can get carplay/android auto by doing so, it means that your car has Wired CarPlay or Android Auto Function.Ｎｏｔｅ：Ｎｏｔ　Ｓｕｉｔａｂｌｅ　ｆｏｒ　ＢＭＷ，Ｔｅｓｌａ，Ｎｉｓｓａｎ　ｃａｒｓ．Frequently Asked Questions1. The device does not connect to the phone's Bluetooth (BT)?a. Check if the BT of phone turns on.b. Unplug the device and then reconnect.c. Turn off the BT and forget the device, then reconnect it.d. Delete the connection history on the vehicle screen and then reconnect.2. BT/WiFi/Hotspot connection automatically turn on and off?Follow the user manual to upgrade the firmware version.How to update the firmware?1. Consult to get the Update Files.2. Copy the Files to a MicroSD Card (also called "TF Card"), the card doesn't include in the package, you need to have your own.3. Insert the MicroSD Card into the CarPlay Box.4. Connect the Box to your car, then it will update itself.5. Update done.