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I recently discovered that my computer is 64-bit. I have backed up my Home folder, and reinstalled Ubuntu. The reinstall wasn't nearly as painful as I thought. There is one thing that I can't quite seem to figure out: how do I get the 64-bit Firefox Beta build? I always get the Beta builds, but I want to take advantage of the 64-bit architecture of my computer. this page says that Mozilla has come out with a 64-bit version of Firefox, but I can't seem to find it.

I do understand the ramifications of using a 64-bit browser, but I've decided to jump right in and do it anyway. (Flash and Java are already 64-bit, and who cares about Silverlight, since it's not for Linux anyway?)

There's only one issue, and it's a big one: I can't find the 64-bit Beta PPA!!! (I really hate using .tar.gz files, but I'd be willing to do that as long as I could still access Firefox via the Launcher. Oh, speaking of which, I don't understand .tar.gz files. Once, I managed to run one (the Dropbox Beta build,) but I have no idea whatsoever on how to install them: as in, click on the icon and go.)

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up vote 5 down vote accepted

Here's the official Firefox Beta PPA.

To add the PPA to your computer, run these commands:

sudo add-apt-repository ppa:mozillateam/firefox-next
sudo apt-get update && sudo apt-get upgrade

Do note that unlike Firefox Nightly builds, you can't use Firefox stable and Firefox Beta releases concurrently.

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Here you go, Firefox 64 bit. It isn't a PPA so you will be compiling it. It is directly from so you can trust it. I saw another sight that claimed to offer 64 bit Firefox but it looked a little shady. These are also Nightly builds so you can expect some issues. Otherwise this was the only 64 bit Firefox I was able to locate.

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