Zitat (Dennis1993)
I updated in March the version 5 to 6 by copying the new files to the server and copy the data folder and config file.
This is the correct way to do it without using git. So far so good.
Zitat (Dennis1993)
If I try these steps with version 7 the setup is not available anymore. I dont understand that.
The web interface at /setup/setup.php was abandoned with ILIAS 7. Please use the new command line interface (CLI) to apply the database update steps and other potential migrations. See the documentation for ILIAS 7 for more information:
https://docu.ilias.de/goto_docu_pg_124784_367.html#database-update
Zitat (Dennis1993)
Can I update the two mandants in one step?
Support for multiple clients/mandants was abandoned with ILIAS 7 too. We never used multiple clients in the first place, so I cannot help you here unfortunately. Maybe someone else may provide some guidance here.