Haven
Please follow the steps below to change the Wi-Fi band from 5Ghz to 2.4Ghz:
Using the Blackvue app on your phone:
1. Select "Connect to camera" on the landing page.
2. Click the gear icon 
3. Choose Firmware settings.
4. Go to Wi-Fi > Wi-Fi band > Choose 2.4Ghz
5. After making any changes, go back to the Firmware settings menu, tap and tap Save and close.
Using the Blackvue PC Viewer or Mac Viewer:
1. Turn off the dashcam and remove the microSD card.
2. Insert the card into the microSD card reader and connect it to a computer.
3. Run the BlackVue Viewer program and the SD Card Viewer
4. Go to Settings (Gear icon) > Firmware settings
5. Click the Wi-Fi tab and choose 2.4Ghz under the Wi-Fi band.
6. Click Save & Close.
