We have purchased two pieces of the Arduino MKR NB1500. both of which sufffer from a modem lockup after 1-4hrs operation where a power down reset is required to get them working again.
They are both firmware rev 5.06 and ublox firmware release document https://www.u-blox.com/sites/default/files/SARA-R410M-02B-01_PCN_%28UBX-19024506%29.pdf for firmware 5.08 lists a lot fixes for modem lockups.
Will Telstra replace the MKR NB1500 boards we have with upgraded versions unser warranty? The firmware upgrade process is not very well documented and looks a little bleeding edge making it look fairly risky to upgrade the firmware ourselves.
Sorry to hear that you are encountering modem lockup issue. I shall check with our engineering team for next steps and provide you the next steps.
FYI, I moved the post to IoT Devices Forum channel. I shall provide update once I receive from our engineering team.
I have been advised that you need to contact the arduino support for this issue and they will guide you with next steps. You can reach them via https://www.arduino.cc/en/contact-us/ page and provide the following details along the description of the issue you encountered.
Invoice No/ Transaction ID:
Faulty Device name: MKR NB 1500 board
Fault: <Describe the issue>
Apparently Ublox will supply the firmware if the request is made with a support ticket, so that is what I've done.
Thanks Steven for letting us know that you have requested for the firmware from Ublox. Could you please update this post on how you go with the firmware update?
I've successfully updated the firmware on the Ublox SARA-R410M-020B-00 modem MKR NB 1500 to L0.0.00.00.05.12,A.02.19.
Step by step instructions are posted on the Arduino forum https://forum.arduino.cc/index.php?topic=731275.0
Can you confirm that the firmware update fixed the modem crashing issue. I am also having the same problem.
Did you find the instructions link shared by Steven helpful?