I have a EAP660 HD(EU) v1.0

Last firmware version recently released is version 1.6.3: link

Note when downloading states this:

Minimum FW Version for Update: 1.6.2 Build 20250908 Rel. 78163.

Anything under v1.6.2 can't be upgraded (I tried doing so from versions 1.4.2 and 1.6.0 beta, the only ones I could find).

Where do I find v1.6.2 to satisfy the upgrade requirements?