this is the way an update is usually done in Joomla. Yes. And my component follows exactly that way and it fetches the updates from my own update server. There is nothing inadequate.
The problem is in the behavior how Joomla updates the mySQL-Database or the way I understand the behavior.
My server is ok. And also the update process is ok. But what does Joomla do with the mySQL-Update files. Where does Joomla search form them (I gave the right pathes in the component PHP-File)? Is it written correctly? Do I have a slash at the right position or is there someting missing.
This is what I expect from the experts here to answer.
Does anyone know, how to fix my problem? Or at least, how to debug it instead of counter the version numbers up and up and up?
BTW: Here is the link with explanations how to create an update server:https://docs.joomla.org/J3.x:Developing ... ate_server