On March 26 in Fremont Ca there is a Yocto Project Developer, which is basically a one day intro to the Yocto Project and OpenEmbedded. We use OpenEmbedded to build the SD card for the E310. So if you have some time and are in the area, you can get a bit more insight into how to customize your E310 for your specifc requirements. https://www.yoctoproject.org/tools-resources/events/yocto-project-developer-day-us-2015 Admission includes an arm or Intel dev board, sadly not an E310 :) Sorry about the short notice. Philip