Profile is a folder which store all your personal data in a safe place

• https://support.mozilla.com/en-US/kb/Profiles

You can use this button to go to the current Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Open Containing Folder

here explain how to backup profile

• https://support.mozilla.com/en-US/kb/Backing%20up%20your%20information

Here explain how to restore it

• https://support.mozilla.com/en-US/kb/Recovering%20important%20data%20from%20an%20old%20profile

https://support.mozilla.com/en-US/kb/what-firefox-sync

Please update Firefox to the latest version via "Help > About Firefox" or "Help > Check for Updates" The Firefox Firefox 7.0.1 version that you currently run is no longer supported with security updates.

• http://www.mozilla.org/security/known-vulnerabilities/

You can use Firefox Sync.

• https://support.mozilla.org/kb/what-firefox-sync
• https://support.mozilla.org/kb/how-do-i-set-up-firefox-sync
• https://support.mozilla.org/kb/add-a-device-to-firefox-sync