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I cannot make the firefox 4 work on my mac (G40) 10.4 tiger. What do I do?

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I tried to update to firefox 4 and downloaded the program. When I opened and installed it it came up as a crossed circle and refused to work. I have a Mac G4 with a OS tiger 10.4 and I cannot even get back to the old firefox. Everything else work (new programs etc.) fine.

I tried to update to firefox 4 and downloaded the program. When I opened and installed it it came up as a crossed circle and refused to work. I have a Mac G4 with a OS tiger 10.4 and I cannot even get back to the old firefox. Everything else work (new programs etc.) fine.

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http://www.mozilla.com/en-US/firefox/4.0/system-requirements/

Mac Operating Systems

  • Mac OS X 10.5
  • Mac OS X 10.6

Recommended Hardware

  • Macintosh computer with an Intel x86 processor
  • 512 MB of RAM
  • 200 MB hard drive space

For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

Or you can get Firefox 3.6.16 here:
http://www.mozilla.com/en-US/firefox/all-older.html