I do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY?

[mike zt]

I do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY?

the nrfprog version is V5.2.0, I use nrf51822qfaa,s110,keil,etc.

[Susheel Nuguru]

Not sure, maybe the debugger lost power in middle of doing a pin reset?? I don't know. Did you try "nrfjprog --recover" on command prompt (without the quotes).

you can also update your nrfjprog, you are using very old version. Download here