Rated 5 out of 5 stars

Από τον/την truello στις Ιούν. 18, 2008 · μόνιμος σύνδεσμος

The 6 steps DO work. Those of you who couldn't get it to work were probably not editing the file in edit mode, but a temporary file which never gets put back into the zip.

Rename .xpi to .zip, extract the zip, edit the file, rebuild the zip, rename to .xpi then install.