Simatic Manager Hardware Update fails

Opening a recently updated PLC backup from the equipment vendor with an outdated service laptop belonging to our company: When retrieving, it says Missing Software Package. I first try to install the hardware updates with the "Download from Internet" option selected, but this fails because Simatic Manager thinks it is disconnected from the internet, allthough other apps can connect. So then I download the Hardware Support Packages and install using the "Copy from disk" option selected.

But still I cannot open this project without said error. I know the backup is not corrupted, since it can be opened on a different computer with up-to-date Siemens SW. Most importantly, the CPU does not appear in HW config, nor in the project tree. Presumably because Simatic Manager thinks the HSP is missing. And because of this, I'm unable to even view the program blocks. I've checked the order number of the CPU against the list of equipment covered in the update package, and found it.

The service laptop has Step7 v5.5 installed.

What could be causing this problem and how can I rectify it?

Post a screenshot of the message where the missing software packages are listed.

PS. If it's stating that a software package is missing, it's not referring to HSP's...

Have you tried to do a repair installation of the Simatic Manager. There hasn't been a newly released 300 or 400 cpu in a very long time, so they should all be available in the HW config of V5.5 with the latest SP and updates.

The latest version: SIMATIC STEP 7 V5.5 SP4 and here you can get Hotfix 11 for it.

This sounds like a good idea. I have to wait for my registration to be approved before I can download. But I see the page you linked to says this is trial version of the software.

Is the software actually different from the licensed version?