Firefox Portable

Is it possible to downgrade the portable version of firefox. i'v googled the links but couldn't find any. is it possible to get some on portableapps.com?

Here's way to make firefox portable for windows and linux (native, not wine) with same profile.

First make 4 folders for Firefox on your hard drive like:

D:\FirefoxBrowser
D:\FirefoxBrowser\Linux
D:\FirefoxBrowser\Windows
D:\FirefoxBrowser\Profile

Now let's install Firefox. Download Firefox installer for windows(exe) and linux(tar.gz) and save them. Open windows(exe) installer in 7-Zip and extract all files from core folder to FirefoxBrowser\Windows folder so firefox.exe is saved in path like:

D:\FirefoxBrowser\Windows\firefox.exe

Hi there,

I've been using Firefox Portable for several years now as my "primary" browser regardless of what machine I use it on with great success. My question is related to using the 64 bit version of Firefox (which I do presently use with the Firefox Portable runtimes or whatever they're called).

Hello,

after the upgrade to portable firefox 8.0 I've experienced heavy ram-usage. With like 44 open windows I normally have ~1gb ram and 36% cpu (with you tube videos running) with firefox 7.0.1. System is amd e-350 cpu @1.6ghz and 8gb of ram on a 64bit win 7 pro os.
Running firefox 8.0 the cpu jumps up to ~60% cpu and >1,6gb ram (and rising). The comp nearly freezes and is barely able to handle typing in browser window with heavy lag.
Downgrading to 7.0.1 solved it for me, not sure what's the exact problem. Disabling/enabling every single add-on didn't help on 8.0.

Is it safe to use Firefox Sync and sync bookmarks and password to portable firefox? And is it safe to save passwords? I do not want passwords and etc. stored or somehow is accessible at local computer.

I have been running FF portable for years now but have had problems with the most recent updates: Nothing after 6.0.2 will upgrade it always fails and rolls back.

I don't think this is the upgrader specifically (It complains about firefox.exe being locked and can't rename it) as I've run the upgrade manually which I can get complete successfully but FF just crashes then.
I've also tried installing each version from scratch in a new folder and they just crash - all I get is the splash screen.

I am running WinXP with SP3.

Is it right, that Firefox Portable should not set as the Windows default browser, because this settings created a registry key, which won't removed after closing of Firefox Portable?

I am using Firefox Portable with Lastpass (a password manager) installed. I carry it around on a USB key and use it on various public computers. I've noticed that when I plug in the USB and open Firefox, I am still logged in to at least some of the sites I was using the previous time - including Lastpass. This seems to mean that if I forgot my USB somewhere, someone who picked it up could get into my Lastpass account and by extension any other accounts that I have stored on Lastpass.

EDIT - Simply hold the SHIFT key while firefox starts to enter safe mode. Then a window appears to allow disabling of addons. You can also delete bookmarks and login details but this is permanent.

I propose to add
extensions.enabledScopes = 5
to default preferences for new profile.

Purpose is to isolate FirefoxPortable from running environment a bit and load only extensions form user profile or those associated with application.

In practice: this will restrict searching for exts to paths:
{FirefoxPortableDir}\App\Firefox\extensions
{FirefoxPortableDir}\Data\profile\extensions

while excluding exts listed by registry or located in appdata profiles for current and all users.