Unknown device error 9 in nrf programmer

[Khodidas11]

Hi,

We designed our custom board using nrf54l05, and tried to flash it using segger J-lInk as well as using nrf54L15-DK Debuger out port using nrf connect Programmer utility. we checked and verified connections which are OK, 
but facing issue of error code 9, UNKNOWN Device.

Please Help

Regards

Khodidas

[MossieMurphy]

@Geometry Vibes Your device does not have firmware or bootloader, or there is an error during the flashing process, this error may occur. Try flashing again with a new firmware or resetting the device.