Not used IPB but at a guess your favicon should reside in the forum root directory on your server and be favicon.ico backup this first and replace with one of your own and that should be it (I think).

JGM.
JGM Reviewed by JGM on . How can I change the name of the site? How can i change the name of site which is displayed in adress bar....it comes invision power board ... i have installed ipb 3.1.0 in it Rating: 5