Nrf51Dk not detecting

[Dhaval Dalvadi]

I have used nrf51Dk with nrfPPK before some days
now trying to flash nrf51DK but its not detecting any board
I tried to recover but not recovering it
I have already added jumper on p22 too.

LED5 is on and not blinking

[Susheel Nuguru]

then the device seems to be dead. It could happen if it was supplied with high voltage or if few of the pins are shorted with hand or any other conductor unintentionally.