PCA10040 jlink error

[nyni]

This should not be a sudden my PCA10040.

Jlink are probably going to have failed.

It does not appear in the USB Jlink to appear as Atmel.

Is there a way to recover Jlink?

Atmel Modem / Bossa Program Port/

[bjorn-spockeli]

Yes, if you hold down the Reset button on the PCA10040 while powering it on it should start in bootloader mode. The device should then show up as a BOOTLOADER drive and you can drag and drop the JLink firmware, found here, onto the drive. This is provided that the bootloader firwmare has not been deleted as well.