I am able to access the manufacturing interface to TFTP an image into the Digi Connect ME 9210. However, it does not seem like it is possible to reflash the POST image from that interface.
Is there any way for me to flash a new POST.bin without access to the configuration page?
I would strongly suspect that the problem is not corrupt POST and something else is wrong with the module. If this happens a lot I’d carefully remove and RMA the module and request Failure Analysis.