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I was not able to install Firefox 4.o.1 for windows because the system indicates that there was no source material for it

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The current version of firefox on my computer is getting outdated, and i was prompted to install the upgrade, Firefox 4.o.1 for Windows. During the installation process, the process was terminated because the source material for the upgrade was not available. Hence, how do i get the source material for the installation process to be completed?

The current version of firefox on my computer is getting outdated, and i was prompted to install the upgrade, Firefox 4.o.1 for Windows. During the installation process, the process was terminated because the source material for the upgrade was not available. Hence, how do i get the source material for the installation process to be completed?