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I attempted to update to Firefox 6 but my system won't support it. Then I tried upgrading to 4.0 but it automatically tries to upgrade to 6.0.

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NWFF
NWFF
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We are operating with Firefox 3.6.

In order to use our Quickbooks online, they suggested upgrading to Firefox 6.0. I attempted and my system is too old (Mac OS 10.5.8).

So, I tried to download Firefox 4.0. When the download begins it's 6.0 that is attempting to download and once done, there is a circle and slash through the Firefox logo. I can't find a way to upgrade to 4.0.

Any help would be appreciated :) Wen

We are operating with Firefox 3.6. In order to use our Quickbooks online, they suggested upgrading to Firefox 6.0. I attempted and my system is too old (Mac OS 10.5.8). So, I tried to download Firefox 4.0. When the download begins it's 6.0 that is attempting to download and once done, there is a circle and slash through the Firefox logo. I can't find a way to upgrade to 4.0. Any help would be appreciated :) Wen

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cor-el
cor-el
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For an unofficial Firefox 4 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at:

Firefox 3.6.x (Mac OS X 10.4 and later) can be found here: