They are fine now (I have 3 that are now working perfectly and that have updated firmware), but the firmware update process is a bit tricky. You can either read the entire thread that I started in frustration, or you can take the TL;DR approach and skip to my post here at the end where I explain all the nuances of getting it to work.
Note that the firmware file name at the upthread link posted by Jason Bottjen (@JasonJoel) won’t be accepted by the device because it has spaces in the name. You will need to replace the spaces with underlines or hyphens after you download the firmware from Aeotec, before you upload it to the Device Firmware Updater app.
Oh, and, after the update, I had to exclude, reset, and re-include them before the driver reported the new firmware update version.
