nrf51822 reset configuration

[Cornel]

Hello, I'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 "the problem ocured because I removed it when it was connecting so it got hanged with that connection and can`t get paired to any other". Maybe I'm wrong but this sounds like a software problem to me, so I'm trying to find a fix. Is there any way I can reset the configuration of nrf51822, hardware way (I mean by connecting any pins)? Will SWDIO/nRESET help me with this issue? Many thanks, Cornel.

[endnode]

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's clearly a bug of that.

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 "reset to factory settings" magic switch then it must be SW feature and you need to communicate with SW manufacturer/owner.