Thank you for your quick reply, and the the advice; I went to
/tmp/calibre-installer-cache as root, and deleted both
calibre-4.17.0-x86_64.txz and
calibre-4.17.0-x86_64.txz.signature.
Then launched the install:
Code:
# calibre-uninstall && wget -nv -O- https://download.calibre-ebook.com/linux-installer.sh | sudo sh /dev/stdin version=4.9.0
Using python executable: /usr/bin/python3
2020-05-28 09:28:21 URL:https://download.calibre-ebook.com/linux-installer.sh [31887/31887] -> "-" [1]
Installing to /opt/calibre
Downloading tarball signature securely...
Will download and install calibre-4.17.0-x86_64.txz
Downloading calibre-4.17.0-x86_64.txz
100% [==========================================================================================================================]
Downloaded 102399576 bytes
<SNIP>
Seems that in spite of being asked to use 4.9.0 it uses 4.17.0
Get the same result trying with 4.9.1