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Documentation > GR5xx DFU Development Application Note/ Introduction/ DFU Communication Mode Copy URL

DFU Communication Mode

Two DFU communication modes are supported: wireless communication and wired communication.

  • Wireless communication: This mode is also known as over-the-air (OTA) DFU (commonly referred to as OTA), which means firmware upgrade is achieved through wireless communication. Wireless communication via 2G/3G/4G network, Wi-Fi, and Bluetooth can all be used for DFU.
  • Wired communication: Mainly include communication through UART, USB, and SPI.

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