Firefox version compatibility with Selenium

Question

I want to update Selenium version 3.6 and which is the best version of FF to use if Gecko driver is not used?

Answer 1

Each Selenium release should support each version of Mozilla where the property "marionette" needs to be set to true either by default or through configuration as follows:

cap = DesiredCapabilities().FIREFOX

cap["marionette"] = True

But if you are working with legacy releases GeckoDriver still works and you need to explicitly set the property "marionette" to false as follows:

cap = DesiredCapabilities().FIREFOX

cap["marionette"] = False

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