Hi, odd issue here. I’ve got a Boron LTE setup using a third-party SIM that works great when it’s connected over USB to my laptop. Light starts out blue flashing, then green flashing, then blue flashing, then happy breathing blue. However, when I change the Boron to powered from an adapter over USB or directly from a 5V source, it remains stuck at the initial flashing blue stage and never goes green (connecting to cellular, etc.). Further, if I power on the device externally, leave it stuck at this stage for a while, and then come back and plug it into my laptop, it will soon start flashing green and boot properly. This makes me think it’s waiting for some USB event to continue booting, but I can’t think of what that would be.
Has anyone ever seen something like this before? I can’t find any reference to a similar issue online. I’m running firmware v1.4.4 and the problem persists even after flashing my board back to the Tinker binary.