Hello, everyone!
The video shows how to change the Mozilla Quantum interface's language. This change is valid for Mozilla Quantum - release 60 and later. The default should be the preference intl.locale.requested. If there is no preference intl.locale.requested, you can create one. Do not worry - that's easy. Just watch the video carefully.
For Firefox - release 59 and previous versions:
If intl.locale.requested does not change the language, do the following:
about:config, put in the address bar intl.locale.matchOS = false
Put in the address bar - general.useragent.locale
Put the language code in the window.
Press OK/Enter-Restart Mozilla Firefox.
If you have any questions, please put them in th...