To update DJI RS 4 firmware follow the steps below.

1. Press and hold the power button to power on DJI RS 4.2. Launch the DJI Ronin app, tap Connect to Gimbal, and select your DJI RS 4 on the device list.3. When new firmware is available, there will be a prompt on the top of the DJI Ronin app main interface that says "Update Now." * Simply tap it. There will be a prompt to indicate a successful update. Tap Exit to complete the update.4. If the update fails, restart the device and try again.

*Do not power off the device or exit the app until the firmware update is complete.