1. Scan the QR code below with your mobile phone's browser and download the 'VgateFwUpdater' app
2. Open Settings - Bluetooth - Connect to 'Android-Vlink' (not required for iOS), if it is WiFi connect to WiFi will work
3. Open the 'VgateFwUpdater' app and click on 'SCAN' to continue scanning the same QR code as in step 1
4. Choose Bluetooth or WiFi, depending on your device
5. Click 'DOWNLOAD' and wait for it to upgrade successfully, don't pull out the adapter in the middle.