Hello,
I want to validate NB-IoT NTN connectivity using an nRF9151 SMA DK connected directly to an R&S CMW500 emulator.
Goal:
- Connect to the CMW500 in NB-IoT NTN (band 256)
- Verify IP connectivity using ping and iperf
Current status:
- I installed nRF Connect for Desktop apps: Cellular Monitor, Serial Terminal, Programmer, and I have J-Link OB.
- I flashed this application firmware successfully and can send AT commands from Serial Terminal: nrf9151dk_at_client_2025-08-14_6c6e5b32.hex (AT client is working; AT returns OK.)
Problem:
- I do not know which firmware/application combination is required for NB-IoT NTN on the nRF9151 SMA DK, and how to apply them using Programmer.
- I do not know the correct AT command sequence to bring up NB-IoT NTN (band 256) and then run ping/iperf for end-to-end connectivity testing.
- I tried to flash NTN modem firmware but it did not work: I tried mfw_nrf9151-ntn_1.0.0-1.alpha and could not get it working. The download page shows the NTN modem firmware as mfw_nrf9151-ntn_1.0.0-1.alpha.zip. What is the correct flashing procedure and prerequisites for NTN modem firmware on the SMA DK?
Additional context:
- The CMW500 side can provide a destination server for ping/iperf testing.
- I was also told that UE latitude/longitude must be set on the UE side (via AT commands or similar), otherwise NTN testing may not work.
Request: Please provide either:
- a step-by-step guide (which application firmware + which modem firmware, how to flash with Programmer, and which AT commands in what order), or
- a link to an official guide/tutorial that explains the exact procedure for NB-IoT NTN testing with nRF9151 SMA DK.
Thank you.
