Arduino Genuino Zero Atmel Studio can not upgrade firmware after trying to connect to target microcontroller using device programming dialog box or start without debugging icon. How to fix the firmware upgrade problem when the firmware won’t upgrade. A failed firmware upgrade prevents the use of the target board with Atmel Studio 7. The firmware appears to upgrade, but does not, as described below.
Genuino Zero Atmel Studio can’t Upgrade Firmware Problem
After opening the Programming Dialog box in Atmel Studio 7, or trying to program or debug the board, the Firmware Upgrade dialog box opens. After clicking the Upgrade button in the dialog box, the firmware appears to upgrade immediately. When trying to connect to the board again with Atmel Studio, the Firmware Upgrade dialog box appears again saying that the firmware needs upgrading. The dialog box appears as follows after the attempted upgrade that does not work. Here the Firmware Upgrade dialog box appears after the Apply button was clicked in the Device Programming dialog box.
This problem occurred on my Genuino Zero board, but I have read reports of it happening on Arduino M0 Pro boards and Atmel SAMD21 Xplained boards as well. The firmware that Atmel Studio is attempting to upgrade is the firmware in the embedded debugger (EDBG) chip found on Arduino Genuino Zero, Arduino M0 Pro and SAMD21 Xplained Pro boards.
Arduino Genuino Zero Atmel Studio Can Not Upgrade Firmware Solution
This solution simply stops stops Atmel Studio from automatically checking if the firmware needs upgrading. It does not actually upgrade the firmware on the EDBG chip.
The following steps describe how to bypass the firmware upgrade in Atmel Studio.
1. Open the Device Programming Dialog Box
Start Atmel Studio and then click the Device Programming icon as shown in the image below. The icon is found on the top toolbar. This opens the Device Programming dialog box.
2. Open the Device Programming Settings
In the Device Programming dialog box, select EDBG as the tool and SWD for the interface. In the Device field, select the target microcontroller on the board. For Arduino / Genuino Zero / M0 Pro boards this is ATSAMD21G18A. For the Atmel SAMD21 Xplained Pro, it is ATSAMD21J18A.
When clicking the Apply button in the Device Programming dialog box, the Firmware Upgrade dialog box appears and then fails to properly upgrade the firmware. Instead of clicking the Apply button, click the Settings icon at the right of the Device Programming dialog box as shown in the image below.
3. Disable the Check Firmware Setting
In the Options dialog box, find Tools near the bottom of the left pane and expand it. Click the Tool settings item to select it. In the right pane, double click True at the right of Check firmware to change it to False. These steps are shown in the image below.
Click the OK button to close the dialog box.
4. Test the Changes
Finally test the changes. Back in the Device Programming dialog box, with the correct tool, device and interface selected, click the Apply button. This time the Firmware Upgrade dialog box should not appear and it should be possible to program and debug the target microcontroller. Click the Read button next to Device Signature to make sure that the communications with the target microcontroller is working. These steps are shown in the image below.
After completing the above steps, I was able to program my Arduino Genuino Zero board using Atmel Studio. I first backed up the bootloader using the Device Programming dialog box and then loaded a C program that blinks the on-board LED. This proved that the EDBG interface could be used to read and write without upgrading the firmware.
Although this solution may not be ideal because the EDBG firmware is not updated to the latest version, it still solved the problem of having an endless firmware upgrade loop that fails to upgrade the firmware and then prevents use of the target board with Atmel Studio.