Looks like I posted this question in the wrong section. I looked at the BU-353 thread, and found how to obtain the FW version.
The version on one is F-GPS-03-0701231, which appears to be older. The device is a few years old, so I'm not surprised that this would be older.
I also saw that firmware updates are not posted on here, and instructions were messaged, because of the possibility of breaking them. It looks like I may need that information though.