Learn how to enable Over-The-Air (OTA) uploads for:

• GIGA R1 WiFi
• Portenta H7
• Portenta H7 Lite
• Portenta Machine Control

Follow these steps if you experience any of these errors when attempting an OTA upload:

• Error while mounting the filesystem. Err = -5
• Arduino_Portenta_OTA::begin() failed with error code -3

1. Connect your board to Arduino IDE

1. Open Arduino IDE.

2. Connect the board to your computer with a USB-C cable.

3. Select your board in the board selector, or use the Tools > Port and Tools > Board menus.

2. Format the flash memory

Format the board’s Quad Serial Peripheral Interface (QSPI) flash memory.

Follow these steps:

1. In the top menu bar, open File > Examples > STM32H747_System > QSPIFormat.

2. Click Upload to upload the sketch.

3. Open the Serial Monitor using one of these methods:

   • Click the button in the top-right corner.

   • Select Tools > Serial Monitor in the menu bar.

4. If the Serial Monitor is empty, run the sketch again by pressing the RST button on the board.

5. This message should appear:

   Do you want to use partition scheme 1? Y/[n] If No, partition scheme 2 will be used.

   If you do, type Y into the text field and press Enter to send.

6. Followed by this message:

   WARNING! Running the sketch all the content of the QSPI flash will be erased. Do you want to proceed? Y/[n]

   If you do, type Y into the text field and press Enter to send.

7. Wait until QSPI Flash formatted! appears in the Serial Monitor output.

3. Flash the Wi-Fi firmware

Flash the latest Wi-Fi firmware version to the board.

Follow these steps:

1. In the top menu bar, open File > Examples > STM32H747_System > WiFiFirmwareUpdater.

2. Click Upload to upload the sketch.

3. Open the Serial Monitor using one of these methods:

   • Click the button in the top-right corner.

   • Select Tools > Serial Monitor in the menu bar.

4. If the Serial Monitor is empty, run the sketch again by pressing the RST button on the board.

5. If you get this message:

   A WiFi firmware is already installed. Do you want to install the firmware anyway? Y/[n]

   If you do, type Y into the text field and press Enter to send.

6. Wait until Firmware and certificates updated! appears in the Serial Monitor output.