The system is not designed for this.

If you want to keep any data, you must restore

a backup and don't uninstall EasyMedia. The.n Upgrade the forum with EasyMedia and run the rebuild data worker in ACP.

If you uninstall it, the tables will be deleted and by reinstalling it will be created clean.

So all data are lost.

You need to restore a backup and then you have to update the system with EasyMedia, not just the forum.

What do you mean by reinstall?

If you uninstall EasyMedia, all your data will be lost.

If you try to upgrade from the old version to 5.3.5, you will have to upgrade from the package server.