As per subject, I lost my firefox sync data especially my important bookmarks and saved logins. I want to recover it but Im unable too. I search the web and your support site like recovering firefox profile, system restore but nothing works. I use firefox 64. I tried to create new profile and copy the places.sqlite and logins.json to the new profile but it doest work. It will make my copied files corrupt. Is there any other solution? I badly need to recover it. All my saved accounts and work bookmarks is there. Now all is gone when I login using my firefox account. Account is: jd.veloso23@gmail.com