Firefox 3.6.28 is the last version of the old Firefox and won't be updated with security and stability fixes. In order to keep your computer and personal information safe, we recommend that you install the latest Firefox if possible. This article goes over your upgrade options.
Get the latest Firefox
If you have Windows XP Service Pack 2 or 3, Windows Vista, Windows 7 or Windows 8, you should install the latest Firefox from mozilla.org as soon as possible. For details, see:
The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes:
- The older article Common questions after upgrading from Firefox 3.6
- Further changes Learn more about the design of the new Firefox version 29
- Get started with Firefox - An overview of the main features
Options for older versions of Windows
If at all possible you should avoid using these old Windows versions that are no longer supported by Microsoft. Firefox 12 is the last version of Firefox that will work with Windows 2000, the original version of Windows XP or Windows XP Service Pack 1. If you use these versions of Windows you will have to update Windows in addition to Firefox in order to keep receiving security and stability fixes. For details and what to do if you can't upgrade, see:
Get the latest Firefox
If your Mac has an Intel processor and Mac OS X 10.510.6 or above, you should install the latest Firefox from mozilla.org as soon as possible. For details, see:
The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes:
- The older article Common questions after upgrading from Firefox 3.6
- Further changes Learn more about the design of the new Firefox version 29
- Get started with Firefox - An overview of the main features
Options for Mac OS 10.4, 10.5 or PowerPC processors
New versions of Firefox do not work with Mac OS X 10.4, 10.5 or with PowerPC processors. You will have to upgrade Mac OS or, more likely, get a newer computer in order to keep receiving security and stability fixes and run the latest Firefox. For details, see:
Options for Mac OS 10.4 or PowerPC processors
New versions of Firefox do not work with Mac OS X 10.4 or with PowerPC processors. You will have to upgrade Mac OS or, more likely, get a newer computer in order to keep receiving security and stability fixes and run the latest Firefox. For details, see:
Firefox 3.6.28 is the last version of the old Firefox and won't be updated with security and stability fixes. In order to keep your computer and personal information safe, we recommend that you install the latest Firefox.
Get the latest Firefox
- See Update Firefox to the latest release for instructions.
- If you are unable to update, please see Install Firefox on Linux.
The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes:
- The older article Common questions after upgrading from Firefox 3.6
- Further changes Learn more about the design of the new Firefox version 29
- Get started with Firefox - An overview of the main features
