nRF9160 DK NB-IoT firmware update


I want to use the nRF9160 DK for an NB-IoT application. I am located in Bavaria, Germany where there is no LTE-M coverage. I understand that I need the NB-IoT version firmware to get my DK working in Germany. I already have a sim card from 1NCE that I believe should work here for NB-IoT on band 8. I was wondering if someone could put me in contact with the RSM or whoever can provide the firmware for this?

thanks in advance!