I upgraded to the new Firefox OS version to speed up my laptop,
But it change all my settings, so please let me know how
to go back to my old Firefox settings. I want my old Firefox settings/version.
Thanks in advance.
Referring to the question 951345 (https://support.mozilla.org/fr/questions/951345) a solution would be to try to recover your old profile if it still exists:
The "Application Data" folder in XP/Win2K and the "AppData" folder in Windows Vista and later Windows 7+ versions are hidden folders. Please follow the steps in http://kb.mozillazine.org/Show_hidden_files_and_folders to be able to see it.
Also as a suggestion it is a good practice to regularly backup you profile information as defined in https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles to be able to restore it.
Hope it helps.
Note that this thread is not about Firefox on a desktop computer, but about Firefox OS on a mobile device as you can see in the question details.
cor-el I am not sure actually as it says to speed up the laptop that's why I thought of Firefox desktop instead of Firefox OS? Raulmatia could you please clarify?