will my bookmarks and favorites be transfered if i download the latest browser?

Your personal data is stored elsewhere in the Firefox profile folder, so you won't lose your bookmarks and other personal data when you uninstall and (re)install or update Firefox.

• http://kb.mozillazine.org/Profile_folder_-_Firefox

Make sure that you meet the System Requirements (GTK+ and GLib) for the current Firefox version.

• https://www.mozilla.org/en-US/firefox/35.0/system-requirements/

You can find the full version of the current Firefox 35.0 release in all languages and for all Operating Systems here:

• https://www.mozilla.org/en-US/firefox/all/

These add-ons can be a great help by backing up and restoring Firefox

FEBE (Firefox Environment Backup Extension) {web link} FEBE allows you to quickly and easily backup your Firefox extensions, history, passwords, and more. In fact, it goes beyond just backing up -- It will actually rebuild your saved files individually into installable .xpi files. It will also make backup of files that you choose.

OPIE {web link} Import/Export extension preferences