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由 mco1003 发表于 Feb. 4, 2009 · 永久链接

The steps are:
- download the xpi file
- Launch zip
- Click open and locate file
- open the install.rdf
- locate the line which says "maxversion 1.0" (or other versions and change it to "maxversion 3.0"
- save the changes in the install.rdf zip file
- close the zip program
- install this edited file as an add-on in Thunderbird.