@Ian_down_under 

This firmware version is not newly released and is unlikely to be the cause of the issue. Firmware upgrade failures can result from multiple factors, such as a sudden power interruption, the app closing unexpectedly during the update, or possible network fluctuations. The latter may not always manifest in an obvious way, for instance, a complete network outage, but more often as brief, transient instability.

In your case, please make sure to disable the anti‑theft alarm before attempting a reset, otherwise, the reset will not proceed. How do I disable the Anti-theft alarm of my Battery-Powered Camera? And most importantly, double‑check that you are performing the reset steps correctly: press and hold the RESET button for 10 seconds.

If the device still does not respond, it most likely requires replacement, or you may consult the support team, see if they have any suggestions for your model. Contact Technical Support