Puntuado con 5 de 5 estrellas

por a-aday el Sept. 8, 2008 · enlace permanente

From an earlier review by DerAlb. Works perfectly by the way:

Download the xpi file, rename it to zip, open it. Then open the included file install.rdf and change the maximum version entry for Firefox to 3.0.something.*.
Overwrite the existing version, rename zip to xpi and install. Worked for me!