https://devzone.nordicsemi.com/f/nordic-q-a/25792/nrf51822-reset-configurationHello, I&#39;m trying to repair a device (made with nrf51822) that is not entering the Pairing mode anymore. Everything seems to work fine except that it is not discovered by any windows computer. I asked the vendor and they said &quot;the problem ocured becauseen-USTelligent Community 13Mon, 09 Oct 2017 13:53:48 GMThttps://devzone.nordicsemi.com/thread/101579?ContentTypeID=1Mon, 09 Oct 2017 13:53:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ac64f2e-5b1f-4dcb-bb0c-252672aed9f6endnode<p>Everything related to BLE stack is on all nRF5x based devices SW thing. Then if lower stack is provided by Nordic it is all in upper APPlication layer FW so if it hangs in any non-recoverable bug it&#39;s clearly a bug of that.</p> <p>If the vendor of HW (not the chip but entire product/gadget) and SW refuses to support you you might only take ownership of entire nRF5x SW by accessing its JTAG/SWD interface (PINs), erasing the chip and flashing it with your own SW. But then you need to write it;) If you believe there is some &quot;reset to factory settings&quot; magic switch then it must be SW feature and you need to communicate with SW manufacturer/owner.</p><div style="clear:both;"></div>