I don't use GOG Galaxy and prefer offline installers.

If I go to the download page and download all 28 parts of the "Cyberpunk 2077", will I have the latest patch?

Or do I need to also download some of the other files called "Patch"?

TIA

Build_3906793 Change_4790877 is Patch 1.52, so it should be the latest version.

I wonder why you have to download 108gb of files if the game uses 70gb. It's a nightmare to download with a slow connection, and most parts stops downloading while afk after one hour and a half.

All of those (Part X of 28) are what you need. It's the most recent version fully patched. You don't need any of the other files at all. If you did it through GOG Galaxy, it downloads it all as one big file instead of having 28 separate parts which is a major pain in the butt. I came here to ask this very question. The game isn't even 70GB on disk. A clean install is only 64GB. Why? Why is the installer so bloated?

I've been rethinking this, and it's probably due to the fact that the installer contain all languages. But it's just a supposition.

The reason is apparently because the install files are being compressed twice (which increases the file size), due to the solution that GoG / CDPR uses for its installers.

I only have suspicions and no personal experience with this, so this is basically a rumour from me, but it does fit with what the issue appers to be.

Someone else have taken the time to look closer into it here:
https://www.gog.com/forum/cyberpunk_2077/disk_space_insufficient_issue_for_installing_patch_15_on_131/post25

What it is not is the language files. With default English as selected language, the EN language file is 4.69 GB. Every other language file is only a few MB.

Check
[X]:\GoG\Cyberpunk 2077\archive\pc\content