@SailorMorris 

Someone from TP Link can officially confirm, but in my experience, the firmware available on the download pages for each router are usually behind the "latest" versions that are made available through the update feature built into each router.  Whenever new firmware versions become available via auto-update, they usually don't appear on the download website until several days (or weeks) later.

The naming convention for the downloadable files usually reflect the hardware version and "build date" (not publish date).  In your case, once the firmware you have becomes available on the website, it should have a corresponding download link as follows:

Version reported on router:

• Hardware Version: V1
• Firmware Version: 1.0.6 Build 20211108 rel.61776(5553)

Corresponding download version (once available)

• Archer AX55(US)_V1_211108