https://devzone.nordicsemi.com/f/nordic-q-a/78212/bootloader-uart-tx-problem-in-dfu-modeHi Nordic team, I am trying to implement DFU over uart in nRF52832 using SDK 17.0.0. My device has nRF52832 and main MCU in it, and I would like to do DFU from main MCU. I managed to make nRF52832 enter to DFU mode and tried ping from main MCU. Theen-USTelligent Community 13Wed, 04 Aug 2021 15:58:03 GMThttps://devzone.nordicsemi.com/thread/323390?ContentTypeID=1Wed, 04 Aug 2021 15:58:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d6ad6315-c0ad-4865-b4e2-aa85ac4e175dEinar Thorsrud<p>Hi,</p> <p>As things seems OK from the log (at least initially) I wonder if this could be a matter of flow control? Is flow control enabled on the nRF? If so, what is the state of the CTS pin?</p><div style="clear:both;"></div>