Arduino Uno R4 wifi board is recognized as an ESP board when connected to Arduino IDE

Official Hardware UNO Family UNO R4 WiFi
9

Hi @capv_23. Here you go:

  1. Disconnect the USB cable of the UNO R4 WiFi board from your computer.
  2. Use a jumper wire to connect these two pins ("DOWNLOAD" and "GND") on the 2x3 male header that is near the USB socket on the UNO R4 WiFi board:
    labeled header pins
    labeled header pins1181×906 73.7 KB
    📷

    Arduino - CC BY-SA 4.0 (cropped)
  3. Connect the UNO R4 WiFi board to your computer with a USB cable.
  4. Open the release page for the latest version of the firmware in your web browser:
    https://github.com/arduino/uno-r4-wifi-usb-bridge/releases/latest
  5. Click the "unor4wifi-update-macos.zip" download link under the "Assets" section of the release page:
  6. Wait for the download to finish.
  7. Extract the downloaded file.
  8. Unzip the downloaded file.
  9. Control-click on the unzipped unor4wifi-update-macos folder.
    A context menu will open.
  10. Select "New Terminal at Folder" from the menu.
    A terminal window will open.
  11. Type the following command in the Terminal window:
    sudo xattr -d com.apple.quarantine bin/espflash; bin/espflash write-bin -b 115200 0x0 ./firmware/UNOR4-WIFI-S3-*.bin
  12. Press the Enter key.
    A "Password" prompt will appear in the Terminal window.
  13. Type your macOS user password.
  14. Press the Enter key.
  15. The terminal window might now show a list of the serial ports present on your computer.
    For example:
    [2024-04-04T04:54:21Z INFO ] 🚀 A new version of espflash is available: v3.0.0
[2024-04-04T04:54:21Z INFO ] Detected 6 serial ports
[2024-04-04T04:54:21Z INFO ] Ports which match a known common dev board are highlighted
[2024-04-04T04:54:21Z INFO ] Please select a port
❯ /dev/cu.wlan-debug
  /dev/tty.wlan-debug
  /dev/cu.Bluetooth-Incoming-Port
  /dev/tty.Bluetooth-Incoming-Port
  /dev/cu.usbmodem2114101 - USB JTAG_serial debug unit
  /dev/tty.usbmodem2114101 - USB JTAG_serial debug unit
    If so, use the ↓ key on your keyboard to select the first "USB JTAG_serial debug unit" port from the list (/dev/cu.usbmodem2114101 in the example above), and then press the Enter key.
  16. The terminal window will now show the following prompt:
    ? Remember this serial port for future use? (y/n) ›
    Press the N key on your keyboard.
  17. The flashing process should now start. Wait for it to finish, as indicated by output that looks something like this:
    [2024-04-04T04:50:38Z INFO ] Serial port: '/dev/cu.usbmodem2114101'
[2024-04-04T04:50:38Z INFO ] Connecting...

[2024-04-04T04:50:38Z INFO ] Using flash stub
Chip type:         esp32s3 (revision v0.1)
Crystal frequency: 40MHz
Flash size:        8MB
Features:          WiFi, BLE
MAC address:       dc:54:75:c4:c6:54
[00:00:16] [========================================]     877/877     0x0
  18. Disconnect the USB cable of the UNO R4 WiFi board from your computer.
    :exclamation: It is essential to perform this step.
  19. Disconnect the jumper wire you added at step (2) of the instructions.
  20. Connect the UNO R4 WiFi board to your computer with the USB cable again.

The board should now be recognized correctly in Arduino IDE once again.

Please let me know if you have any questions or problems while following those instructions.