Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
How and where can I change the nodebb icon or title from header top, and also, please help me about framework and file structure(routing)
It's in ACP admin/settings/general
admin/settings/general