Rated 5 out of 5 stars

per Kal.El el gen. 18, 2010 · enllaç permanent

You can make it to work with TB3. You just need to unzip it (XPI is ZIP file), edit file install.rdf, find 3.0b2 and modify it with 3.1 , save file, compress all files to ZIP again, rename extension from ZIP to XPI and it's done - you can install and run it with TB3