If you see “(32-bit)” and you are running { -brand-name-firefox } 56.0 or older, updating to the latest { -brand-name-firefox } version should automatically upgrade you to 64-bit.
Si tu vide “(32-bit)” e le version de Firefox es 56.0 o plus ancian, actualisar al ultime version de { -brand-name-firefox } deberea cambiar te automaticamente a 64-bit.