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Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

When I download the version allocated to 10.4.11, firefox will not install on the operating system

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I download the version shown on the mozilla site for 10.4.11 but when I double click the icon, a window tells me that I cannot use the Firefox application with this version of OS X

I download the version shown on the mozilla site for 10.4.11 but when I double click the icon, a window tells me that I cannot use the Firefox application with this version of OS X

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Firefox 3.6.23 is the last version from Mozilla for PPC Macs, is that what you downloaded?
If so, see this: https://support.mozilla.com/en-US/kb/Installing+Firefox+on+Mac

For older Macs that aren't supported in Firefox 4 / 5 / 6 /7, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

http://tenfourfox.blogspot.com/