How to change logo in phpBB 3 style?
This example shows you how to do it for subSilver 2, but it can also be applied to almost any other style, including prosilver.
1. Upload Logo file
First you should create a logo image and upload it.
If you are using subSilver 2, you should upload logo image to directory styles/subSilver/imageset/
If you are using proSilver, you should upload logo image to directory styles/prosilver/imageset/
Logo should be in gif, jpg or png format.
2. Changing Logo from Administrator Panel
Login to your forum administrator control panel. In control panel navigation click “Styles” link:
In styles management click “Imagesets” link, from available imagesets select one you are editing: