https://devzone.nordicsemi.com/f/nordic-q-a/38474/mbed-osHi all, I&#39;m brand new to embedded systems development and I&#39;m having some issues getting the Mbed OS onto a custom PCB. The PCB we&#39;re using has a Fanstel BT840 chip. The specifications for this chip can be found here: www.fanstel.com/.../ We&#39;ve spokenen-USTelligent Community 13Thu, 13 Sep 2018 11:54:49 GMThttps://devzone.nordicsemi.com/thread/148607?ContentTypeID=1Thu, 13 Sep 2018 11:54:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3674e6b7-8754-4cce-8ee3-cfaa9aabaef7J&#248;rgen Holmefjord<p>Hi,</p> <p>You do not need to flash any specific OS to the chip. When you build a project in mbed, mbed OS is included in the generated HEX-file. If you erase the chip and flash the hex-file generated by mbed, it should work.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>