Can't install, rsync failure, using efi+luks+lvm

I can’t find a way to open the LUKS partition within calamares without opening it beforehand. How are we supposed to do that?

I would like to try the previous release but I can’t find it (21.1.2) in the archive.

Installation using an archived ISO may succeed but impossible to update due to ABI changes.

Should I try 20.2.1?

EDIT: I found it at Manjaro 21.1.2 Pahvo released!
Now downloading… SHA1 OK.
Now preparing USB media…