
To overcome this problem, for those who use the Windows operating system, you can follow this How to: Save the
- ' extension (right click and "save target as");
- download the compactor free 7-zip and install ;
- Right extension downloaded and open it with 7 - zip;
- Right click on install.rdf file and open it with the text editor;
- Look for the string "3.0 .*" and replace with "3.5 .*"
- Save the updated file also ' archive. xpi;
- Drag the Firefox extension that will be installed;