This update file is valid for:

Kat.-No.    Device
520-200	    XL3000flex
560-300	    LDS3000
560-600	    LDS3000AQ
560-200	    LDS3000 Yamaha
560-090  	LDS800

The ARCHIVE folder contains older series versions.

Software for the CU1000 control panel is located in the folder
LD_Cologne -> Products -> CU1000 -> CU1000 Software
https://cloud01.inficon.com/nextcloud/f/7346209

Files with the sha256 extension contain the hash values of the corresponding files.
They are not needed for the upgrade process.

You can use them to verify the integrity of the downloaded file.

To do this, you need a tool that supports the SHA-256 algorithm.
The verification compares the hash value of the file to the value stored in the .sha256 file.

Verification steps:
Download the file and the corresponding .sha256 file.

Use a hash calculation tool, such as
On Linux/macOS: the built-in sha256sum command
On Windows: Tools such as CertUtil or external programs such as HashCheck

Example for Linux:
    sha256sum -c filename.sha256

Example for Windows:
    certutil -hashfile filename SHA256
Open the .sha256 file with any text editor and manually compare the hash output with the file content.