Friends,
we’re glad to announce that Arduino IDE 1.6.9, the latest Arduino IDE, released more or less a month ago, is now supported by UDOO NEO, DUAL and QUAD if you program the Arduino from an external computer.
For what regards the other way around (programming the Arduino IDE from the Cortex-A9 processor onboard) this feature is not supported yet. We’re going to update the preinstalled IDE on UDOObuntu 2 to support this feature.

A quick reference of the documentation, so to speed your workflow:

UDOO QUAD/DUAL
https://www.udoo.org/docs/Arduino_DUE_(Sam3x)/Programming_Arduino_Due_from_External_PC.html

UDOO NEO
https://www.udoo.org/docs-neo/Arduino_M4_Processor/Programming_Arduino_M4_from_External_PC.html

Have a nice Monday!