Modem Reset Loop Recreation

RE: Modem Reset Loop Recreation

dejans — Wed, 03 Dec 2025 12:42:17 GMT

Hi,

[quote user="DamoL"]I think I will open a new ticket on recreating a hard reset/power cycle in software, as a way to fix our issue without units being sent back to us. It is a small number that it happens to, but it does seem to have grown a bit recently. [/quote]

When creating new ticket, please provide your modem firmware version, application log and modem trace.

Best regards,
Dejan

RE: Modem Reset Loop Recreation

DamoL — Wed, 03 Dec 2025 09:47:15 GMT

Hi Dejan,

I actually managed to do it yesterday, by the AT Command passthrough firmware, turning on the modem with AT+CFUN=1 then pressing the reset button on the nrf Connect Programmer software.

We have had some units come back to us in a weird state, that we are struggling to recreate. It seems like the modem just becomes unresponsive, and the only fix is a hardware reset/power cycle - I saw information about the reset loop and wondered if it had anything to do with it, so I wanted to put into our firmware, some way of detecting it when it happens, which I have now done, and it works. From my initial testing I am not sure this is the problem though, as it does recover after 30 minutes.

I think I will open a new ticket on recreating a hard reset/power cycle in software, as a way to fix our issue without units being sent back to us. It is a small number that it happens to, but it does seem to have grown a bit recently.

RE: Modem Reset Loop Recreation

dejans — Tue, 02 Dec 2025 18:00:05 GMT

Hi Damien,

There might be something in your application which prevents this restriction from occurring. Can you provide more information about your application?
Apart from modem reset loop and activation of reset loop restriction documentation, more information on counting towards restriction can be found in the discussions about reset loop prevention and reset loop.

Best regards,
Dejan