I understand you want to install Calibre 6.26.0.

Initially, I checked the provided text and found that the latest version available for download is actually Calibre 7.2.0 for Windows, not 6.26.0. However, I noticed that there's a mention of installing calibre-bin deb package using the command `sudo apt-get install calibre-bin` which might be relevant.

Since you're looking to install Calibre 6.26.0, I couldn't find any direct download link or installation instructions for this specific version. However, I can provide some alternatives:

1. You can try installing an earlier version of Calibre that is compatible with your system and then upgrade it to the latest version (7.2.0) if needed.

2. If you're on a Linux-based system, you can use the command `sudo apt-get install calibre-bin` to install the deb package, which should provide you with the latest available version of Calibre.

Please note that installing an earlier version might not guarantee compatibility with your e-book collection or devices. I recommend exploring Calibre's official website for more information on installation and updates.

Additionally, it seems like there was a release note mentioning a new upstream version 6.26.0+ds Rediff patches - YOKOTA Hiroshi, which might be related to the development of Calibre. However, without further context or information, I couldn't find any direct download link for this specific version.

If you need further assistance or have more questions, feel free to ask!

Instal the new Calibre 6.26.0