I could only find a single page that talks about remote firmware upgrades https://www.arduino.cc/en/Tutorial/LibraryExamples/RemoteDueBlink The Genuino Yún Shield is marked as a "retired product". There appear to be clones from BJ-EPower and Dragino.

Is the Arduino Yún shield the only remote programming option for the Due?

Juraj September 18, 2021, 7:42am 2

there was an attempt to add Due support to my ArduinoOTA library

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