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CloseReview for Disable Add-on Compatibility Checks by PERCE-NEIGE
Rated 5 out of 5 stars
It allows to install incompatible addon. You can do it though the about:config, but this extension is genious. Why is it genious? Because Firefox keep changing the about:config parameter each time it updates, and ask to enter the current version, so no more headache with this.
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