See this great MozillaZine article, Disabling update checks for individual add-ons.
In a nutshell:
- Find the GUID for the extension. GUIDs are either e-mail addresses or a
bunch of random characters inside { }
brackets. The folders named after
extension GUIDs are in the extensions
folder of the profile folder. You
can look at the install.rdf file in
each folder to see what extension it's
for.
- Type about:config in the address bar and press enter.
- Right-click -> New -> Boolean
- Name: extensions.[GUID].update.enabled
- Value: false
replace [GUID] with the GUID of the extension. To find the GUID easier, open up about:config and use extensions.{ as the filter. You can match the description in the value column with the description of the add-on in Tools -> Add-ons if you are unsure of which entry is the GUID you're looking for. Ths GUID is the value between the curly braces in the Preference Name column.
