Spoof useragent using the firefox config file? [closed]

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In firefox you can access a config by typing about:config into the adress bar. In this config how do you alter your useragent?

Answer 1

You have to add an entry.

1. Right Click on about:config page
2. New -> String
3. Preference Name: "general.useragent.override" -> OK
4. Add the value you want -> OK
5. You are ready, test your new user agent!

If you want to reset this value

1. Go to about:config
2. Right click on the preference "general.useragent.override"
3. Reset
4. You are ready (Note that the preference will stay empty, but the next time you will visit about:config will not be there)

If you want an easier way to change/toggle user agent I suggest you use an addon.