RM520N - Cell Tower Lock

IoT Modules 5G Module
1

I’m having issue with QNWLock on RM520N-GL (RM520NGLAAR03A02M4GA). After locking, I’m not able to get back online. Once I reset, it is back online and locked, but it is unstable and disconnects at times. See below when I lock. When I unlock and reset, it’s back to normal function, but no locking. I also tried other towers, same issue.

+QSCAN: “NR5G”,310,260,394090,326,-106,-14,12,0,14D81302B,4FDF00,52,25,18,6,-
+QSCAN: “NR5G”,311,490,394090,326,-106,-14,12,0,14D81302B,4FDF00,52,25,18,6,-
AT+QNWLOCK=“common/5g”,326,394090,15,25

2

Dear @whosvince
The RSRP of cell is -106, it is not good.
This command does not support locking 5G cells of NSA. And it is not recommended for commercial use.

3

This is 5G SA. The lock does work on a GL.INET router that uses RM520N.

Any idea how to fix or do I have to wait for new firmware? is RM520NGLAAR03A02M4GA the latest firmware for RM520N?

4

Dear @whosvince
Please try to test the latest firmware.
As mentioned before, it is not recommended for commercial use.

5

Hi @whosvince,

When you said “This is 5G SA. The lock does work on a GL.INET router that uses RM520N.”, what version of firmware was in the GL.INET router?

I have the same issue here, the +QNWLOCK command works well on 5G SA. But after locking on the PCI, it can’t attach to the PCI. Reset the module to unlock the PCI, then the module attach again. My version is a little old: RM520NGLAAR01A06M4G.