Yes, understand that that has been switched a lot sooner than usual due to pending update of Firefox on the 5th of Sept. Not sure what to do about that but will look into it.

''szczepan1987 [[#question-1231367|said]]'' <blockquote> I was trying to install additional language pack, but it asked me to install update of Firefox which seems to not exist - when I am trying to update it automatically or trying to search manually... </blockquote> Are you trying to change the language of the User Interface or UI of Firefox or to add one or more languages for the Spellchecker? As both Language packs and Dictionaries are listed on https://addons.mozilla.org/firefox/language-tools/ (see description on top). The article explains what the Language pack is for and how to use it. https://support.mozilla.org/en-US/kb/use-firefox-interface-other-languages-language-pack If you were trying to install language(s) for spellchecker then you actually need '''Dictionaries'''. https://support.mozilla.org/en-US/kb/how-do-i-use-firefox-spell-checker#w_adding-dictionaries If you really did want to install a Language pack then scroll down the page for the language pack and look for Version History See all versions link. It should have the previous version listed for Firefox 61.* Normally Language Packs are updated a day early at most as the Fx 62.0 is not scheduled for Release until Sept 5th.