Map not loading after change zoom and default coordinated

[catrucho]

I have accessed my server and change the default zoom settings to 7 and the center map default coordinated and now the map does not load and the web page hangs when I try to open it.
I tried to change the settings from file config, but I do not know in which file they are.
I tried to reinstall web-war file, but no success.
Does anyone know how can I reset or reinstall to have it working again?
Any help would be welcome.
Thanks a lot

[vitalidze]

These settings are stored in database. You can update them via SQL query.