DivestOS: long term device support with enhanced privacy and security

Hello,
I do not know if I am in the right place. I have a big beginner problem, for you maybe a small one or none at all.
I had LineageOS and then iodéOS on the Xperia XA2. After reading the last article by Kuketz, I would like to switch to DivestOS.
In the two OS there was a recovery and the OS respectively. I flashed the recovery to the XA2 with the PC, Windows 10 terminal via USB cable and then installed the OS via a USB stick inserted in the xa2.
Now I want to install DivestOS the same way, but have problems with the installation files I downloaded for the XA2.

  1. copy-partitions-pioneer-release.zip
  2. divested-19.1-20230609-dos-pioneer.zip
  3. divested-19.1-20230609-dos-pioneer-fastboot.zip
    Now when I look at the 3rd zip I find a boot.img. Is this the recovery with which I can then install the 2nd zip?

A tip would be great