MKR1000 fails to update firmware or compile simple example sketches

Official Hardware MKR Family MKR 1000 WiFi
1

My MKR1000 is recognised by the PC and COM port but when I try to update the firmware sketch or any other sketch I get the following error:

Arduino: 1.8.9 (Windows 10), Board: "Arduino/Genuino MKR1000"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\innov\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\innov\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\innov\Documents\Arduino\libraries -fqbn=arduino:samd:mkr1000 -vid-pid=0X2341_0X804E -ide-version=10809 -build-path C:\Users\innov\AppData\Local\Temp\arduino_build_740618 -warnings=none -build-cache C:\Users\innov\AppData\Local\Temp\arduino_cache_131463 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.2.1 -prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.2.1 -prefs=runtime.tools.CMSIS.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\CMSIS\4.5.0 -prefs=runtime.tools.CMSIS-4.5.0.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\CMSIS\4.5.0 -prefs=runtime.tools.openocd.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\openocd\0.10.0-arduino7 -prefs=runtime.tools.openocd-0.10.0-arduino7.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\openocd\0.10.0-arduino7 -prefs=runtime.tools.CMSIS-Atmel.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\CMSIS-Atmel\1.2.0 -prefs=runtime.tools.CMSIS-Atmel-1.2.0.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\CMSIS-Atmel\1.2.0 -prefs=runtime.tools.arm-none-eabi-gcc.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\7-2017q4 -prefs=runtime.tools.arm-none-eabi-gcc-7-2017q4.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\7-2017q4 -prefs=runtime.tools.bossac.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.7.0-arduino3 -prefs=runtime.tools.bossac-1.7.0-arduino3.path=C:\Users\innov\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.7.0-arduino3 -verbose C:\Users\innov\Documents\Arduino\libraries\WiFi101\examples\FirmwareUpdater\FirmwareUpdater.ino

Board mkr1000 (platform samd, package arduino) is unknown

Error compiling for board Arduino/Genuino MKR1000.

I am a complete newbie and realise I am probably missing something obvious but could someone please help me resolve this issue.

thanks
Rob

2

The "Board ... is unknown" error occurs when a Boards Manager installation of a different version of a hardware package fails to completely uninstall the previous version. Here's how you solve it:

  • Click the link on the line following File > Preferences > More preferences can be edited directly in the file. This will open the Arduino15 (or similar name depending on OS) folder.
  • Navigate to the packages/arduino/hardware/samd folder.
  • You will see two folders. One is named by the version of the package you currently have installed, the other is named by the version of the package you previously had installed. Delete the folder with the previous version name. Please be very careful when deleting things on your computer. When in doubt back up!

After doing that, the error should be fixed.

3

Thank you!!!
very much appreciated :slight_smile: :slight_smile: :slight_smile:

4

You're welcome. I'm glad if I was able to be of assistance. Enjoy!
Per