nrf52840 dongle alway boot in dfu

[nicolasp]

Tried to flash ncp .hex for pca10059 on a brand new dongle and now it is stuck in dfu (pulsing red led). The process worked on a second dongle without any issues.

Something is wrong with the dongle?

[Simonr]

This also points to the Dongle being completely normal...

Could you try flashing just the S140 SoftDevice onto the chip? How does the memory layout look when you connect the Dongle in nRFConnect's programmer app? Please provide a screenshot of the programmer app when you've read the memory on the Dongle, and what address range the bootloader and MBR are.

Are you able to see anything suspicious on the chip itself? If possible, could you upload a high-resolution picture of the faulty Dongle?

Best regards,

Simon