GE Enbrighten/Jasco/Honeywell/Ultrapro Dimmer Flicker

Sorry to need so much handholding, but here goes:

  1. Which file on the linked github do I download? The one ending in ...5.53.otz?
  2. Do you know Jasco just posted new 700 series firmware to that site yesterday? Maybe that is the 5.53; I'm really not clear on how to navigate Github. It confuses me.
  3. How do I download a file to the HE?
  4. I installed the Firmware updater. However I still don't see the firmware version in either the device details or the Firmware updater. How exactly do you see this?