Fábio,
Absolutely, we work with JomSocial 2.2.4. We've worked with every release of JomSocial since 1.0.135, and currently ensure compatibility with 2.0+.
As for your current JomSocial integration, yes, you'd need to disable that. We have a support guide on how to more fully replace JomSocial's Facebook integration on the page below, which will show you how to replace their buttons easily:
www.sourcecoast.com/jfbconnect/docs/thir...ration-for-jomsocial
In addition, JFBConnect has the ability to import any existing Facebook users that have already linked their accounts to JomSocial, so it should be a painless transition.
For more information on all of the benefits of JFBConnect's Facebook integration over JomSocial's, see the page below:
www.sourcecoast.com/jfbconnect/features/...n/jomsocial-facebook
Hope that all helps, but if you have any other questions, just let us know!
Alex