If your RGB Nano wireless adapter is experiencing connection issues, updating to the latest firmware may solve the problem. Follow the step-by-step instructions below:

Step 1. Power the Device

• Plug the RGB Nano into a USB 5V power source such as a laptop or power bank.
  
  ⚠️ Important: Do not connect the device to your car’s CarPlay/Android Auto USB port during the upgrade, , the upgrade will fail.
  

Step 2. Connect to the Device WiFi

• On your smartphone, go to WiFi Settings.
  
• Connect to one of the following device networks:
  
  OKBox-BT ****
  smartBox-****
  AIBOX-BT ****
  
• 
  Default password: 88888888

Step 3. Access the Upgrade Page

• Open your phone’s browser.
  
• Enter the following IP address:
  
  192.168.1.101
  
• Tap Click to Upgrade and wait patiently (about 1–2 minutes).
  

Step 4. After Upgrade

• Forget/remove the device WiFi network from your phone’s saved networks.
  
• Reinsert the RGB Nano into your car’s USB port.
  
• Perform the initial connection setup again.