When you set up Firefox Sync on your computer, all of your data and
preferences (such as your bookmarks, history, passwords, open tabs and
installed add-ons) gets stored securely on the Mozilla servers. Then you
can connect other devices (a mobile phone for example) and they will be
automatically synchronized, giving you access to all of your
information no matter where you are. This article will walk you though
setting up Firefox Sync for the first time.
Setting up your Firefox Sync Account
Step 1
In Firefox 4,
Click the
Firefox menu button at the top-left of the browser. From the menu
Select Options.*
*
If the Firefox button does not appear in your browser, Press the Alt+T key-combination to open the tools menu, then Select Options.
Step 2
In the options menu,
Click the
Sync tab and then
Click Set Up Firefox Sync.

On the next screen
Click the top button that says
Create a New Account.
Step 3
Now you’ll need to fill in a couple different things to create your account. Enter your
email address, and then also enter your
password for the sync setup. Once you’ve filled in the details,
Click the
Sync Options button.
Tip: Keep your password something easy to remember.
A hacker will need either access to your device or your Sync Key in
order to get into your sync account, so a strong password is not
necessarily required (
but still recommended).
Step 4
From the Sync Options window that appears,
Uncheck any items
that you don’t want to be synced. For me I don’t want my online
passwords being stored on my phone or other computers, and I don’t need
my history synced between devices either.
When done, go back and
Click Next on the previous window.
Step 5
Firefox will now give you your newly generated sync key.
It is very important that you do not lose this number!
Write it down, print it out, screenshot it and save, do whatever it
takes to remember it. Personally, I just copy mine to a text file and
dump it in my Dropbox or email so I can access it anywhere.
If you lose this number and lose access to a synced device, you will
not be able to get into your sync account ever again; you also won’t be
able to register the same email address to make a new account. Mozilla
(Firefox) does not keep this number on their server, so nobody will be
able to recover it for you.
Once you’ve got it backed up,
Click Next.
Step 6
Solve the captcha puzzle and
Click Next.
Done!
Your Firefox sync account is set up and your Firefox 4 client is now synced to the server. After you
Click Finish you’ll be brought to the following page automatically:
http://www.mozilla.com/en-US/firefox/sync/firstrun.html
Now you can start adding other devices to your Firefox 4 sync account, and we’ll continue walking through that below.
Connecting Another Computer
Step 1
In Firefox on your additional computer,
open up the Options menu.
Step 2
Click the
Sync tab in the options menu, then
Click Set up Firefox Sync.
Step 3
Next
Click the bottom button on the Firefox Sync page, titled
Connect.
Step 4
On the Add a Device page,
Click the link on the bottom that says “
I don’t have the device with me.”
Step 5
Type in your Firefox 4 sync account email address and password. Then
Type in our
Sync Key.
Click Next when finished.
Done!
Your Firefox 4 account is now synced on an additional computer. You
can repeat this process as many times as you like. I have all of my
computers running on one Firefox Sync account, and it keeps things
groovy. Being able to easily jump between computers without losing my
open browsing tabs is a really useful feature to have.
All that is left now is to add Firefox sync to your phone, below we’ll talk about the process for Android.
Syncing An Android Phone
Step 1
First, you’ll need the
Firefox Android app.* Once the app is installed,
Open the
Firefox app.
On the outside of your phone
Press the
menu button and then
Tap Preferences on your phone’s screen.
*
If you are using Dolphin or some other browser, there are
plugins that will do the same thing but to keep tings simple we won’t be
talking about those today.
Step 2
On the main preferences tab,
Click the
Connect button.
Step 3
Now we have two different options.
Option 1: If you have a computer nearby that already has
Firefox synced it is the easiest. The three rows of numbers and letters
will need to be typed into a synced computer’s Firefox 4 client, and
we’ll go over that below.
Option 2:
Alternatively if there is no synced computer nearby, you can just
Tap I’m not near my computer and then enter in your Account Name (
which is actually your email address), Password, and Sync key.
Step 4
Assuming you went with Option 1, now you need to
get on your synced computer’s Firefox 4 browser.
Open up the
Options window and then on the Synced tab
Click Add a Device.
Step 5
Type in the 3 rows of letters and numbers just as they appear on your Android phone, then
Click Next.
Done!
Your phone should automatically refresh itself, and it is now
synced. On the preferences page you can now see the account your are
synced to, and disconnect (un-sync) option is also available. Now your
tabs and other browser items should be linked to the ones on your
computer, and vice versa.
How to Unsync Firefox 4 On Your Computer
If you want to get rid of Firefox sync, you’ve come to the right spot
on this page. Note that removing Firefox sync will also clear out your
preferences and account information on your Firefox 4 client.
Step 1
Open up the Firefox 4
Options window, and then on the Sync tab
Click the
Deactive this Device link.
Step 2
Click the
Reset All Information link to confirm that you want to un-sync.
Completely Done!