There is
T80D-V3.1.1 (2021081711) .zip
749.9 MB
(786.4 M byte on disk)
on
https://mega.nz/file/rdJV1QbZ#nUwsfD...bdB-JjXC3V_RCs
But how can someone know this is valid and not tampered with?
In absence of an OTA update or from Boyue Website I can't see a good reason to upgrade from my current V3.1.0-2021042314 as it works.