We do not have a download file for the latest version (86.0), but you can try downloading it from the developer's site
Download version 59.0 from Software Informer
Scanned by 78 antivirus programs on Sep 1, 2024.
The file is clean, see the report.
Version: 59.0 (x86/x64)
Date update: Dec 31, 2017
File name: firefox_installer.en-us.exe
Size: 269 KB