The epoch is adjustable by updating the firmware... if there is an updated firmware. That's the reason for the current batch of devices dying now: it's based o

The epoch is adjustable by updating the firmware... if there is an updated firmware. That's the reason for the current batch of devices dying now: it's based on a date set in their firmware. Unfortunately these are embedded receivers so making anything adjustable isn't necessarily easy. I'm not aware of any devices that implement a rollover counter but there may be some, though a rollover counter needs to figure out how to deal with corrupted or spoofed signals and will have issues like spares off the shelf not working like the device they're replacing.