Follow the steps below to install the latest firmware on your Phantom 4, remote controller, and Phantom batteries. Ensure you follow the steps from top-to-bottom. Carefully read each step and ensure you perform them exactly as written.
1) Before installing a new firmware update, you should confirm that you're using the most recent version of the DJI GO 4 app. If using an Apple device, check the Apple App Store to see if an update is available. If using an Android device, you can check the current version and/or download the latest version of the DJI GO 4 app from the DJI Download Center.
2) Delete all files from your memory card or format it.
3) Ensure your Phantom battery is at least 50% charged. This means you should see at least 2 lights illuminate when pressing the power button. If needed, stop here and charge your battery until it is at least 50% charged.
4) Ensure your mobile device is connected to the Internet.
5) Remove the props and gimbal lock from your Phantom.
6) Insert the Phantom battery into your Phantom and power it on. To power on the battery, press and release the battery button quickly – and, then immediately press and hold it in for 2 seconds.
7) Connect your mobile device to your remote controller with a USB cable and power it on.
8) Start the DJI GO 4 app and wait at the aircraft selection screen (don't click the Enter Device button).
9) Continue waiting at the DJI GO 4 aircraft selection screen until you see the new firmware update available message. If the update message does not appear after a few minutes, try restarting DJI GO 4.
10) Disconnect your mobile device from your remote controller and use the adapter that came with your Phantom along with the USB cable you use to fly to connect your Phantom to your mobile device.
11) Click the firmware update available message and then click the Download Now button to download the firmware. Wait for the firmware to download.
12) Click the "Start Update" button at the bottom of the DJI GO 4 app to start the upgrade process.
13) Restart your Phantom when the "Upgrade Complete" message is displayed.
14) Ensure your remote controller has at least 50% battery level (at least two white lights are lit up at the bottom of the remote controller). If needed, stop here and charge your remote controller.
15) Connect your remote controller to your mobile device using the USB cable.
16) Start the DJI GO 4 app and click the Enter Device button to enter the camera view.
17) Click the "Firmware requires upgrade" message at the top of the Aircraft Status area.
18) Click "Download firmware" to download the firmware. Wait for the firmware to download.
19) Click "Start to upgrade" to start the upgrade process.
20) Restart your remote controller when the "RC upgrade completed" message is displayed.
21) Turn off your Phantom.
22) Insert the next Phantom battery into your Phantom and power it on. To power on the battery, press and release the battery button quickly – and, then immediately press and hold it in for 2 seconds.
26) If you have additional batteries, then go back to step
27) When your remote controller reconnects to the DJI GO 4 app and your Phantom, the Overall Status should show Normal (Latest firmware).
28) Look in the General Settings --> About section of DJI GO 4 to verify you see the firmware versions you just installed.
29) Verify that all of your previous settings are still set in the DJI GO 4 app. You'll want to do this while your Phantom is turned on (with the props off) and your remote controller is connected to the DJI GO 4 app via your mobile device. This is important since many of the settings are saved on the Phantom itself.