Hi,
We haven’t found a solution yet. For our case, restarting the modem doesn’t even help. I contacted Sierra Wireless support as well, they suggested us to try flashing the firmware to an older 4.7 version(available here: source.sierrawireless.com/resou … -packages/). We tried that, but it’s still the same for us. They claimed that we can’t revert back to 4.5 after we have flashed to 4.8.1.
We have a Altus K2 data logger connected to the wireless modem through the COM port. Out of curiosity, do you have same thing?
I guess if we both try to bug support, maybe they will prioritize this higher too.
Thank you, and good luck!