Hello!) Have some problem with custom pcb, created for nrf52832. After mounting all components a connected pcb to nrf52dk through P20 port. Chip was correctly detected in nrfgo. Then I did one MISTAKE) I tried to load .BIN file to chip with Bootloader tab) Not .HEX file... After I pressed confirm it was some error, and now I only see in nrfgo that "chip is not detected or locked", removed can't help: "Unknown error". The internal chip detected correctly if I disable vcc from external pcb......Maybe I can solve with problem without unmounting old CHIP and mounting new ....