The devices won’t automatically update their host OS. You can burn the SD card again and reprovision the device, or we have just started beta-testing remote host OS updates (see this forum post), and can update it for you.
On the other hand, if this is a new issue and an actual bug, it’s uncertain whether upgrading the hostOS will improve on it, will dig in to see whether we can reproduce and triage what the issue is.
What kind of application are you deploying onto the device, does it interact with the network settings at all? (just trying to find out as much as possible about the context, to be able to narrow things down). Any other info that you might think is relevant?
Will try to replicate and keep you posted.