Upgrading Firefox Portable

from portableapps.com:

To upgrade to a newer version of Firefox Portable, just install a new copy of Firefox Portable right over your old one. All your data will be preserved.

• If you're upgrading from Portable Firefox (older name and directories), make a copy of your existing profile folder within the PortableFirefox\Data\profile directory on your portable drive.
• Then download the new version of Firefox Portable and copy your profile from the old version into the new version within FirefoxPortable\Data\profile.
• If you added any plugins or searchplugins, you should copy those directories as well (PortableFirefox\plugins to FirefoxPortable\Data\plugins and PortableFirefox\firefox\searchplugins to FirefoxPortable\App\firefox\searchplugins).