If this reply solves your problem, please click 'Solved It' next to this reply when signed-in to the forum.īeginning with Firefox 4, Macs must have an Intel x86 processor (which you do NOT have yours is a PPC Mac) '''''and''''' OSX 10.5 or higher Read this answer in context 👍 4 All Replies (1) If this reply solves your problem, please click 'Solved It' next to this reply when signed-in to the forum. All support is provided by the developer, not by this site: The product is based on Firefox released versions. Firefox 8 version of TenFourFox is available. You can try the third-party product TenFourFox that supports PPC Macs. The bad news is that support for the Firefox 3.6.x series is likely to end in the first quarter of 2012. The good news is that Firefox 3.6.24 still supports OSX 10.4 and Macs with the PPC Mac architecture. System Requirements: Firefox 4 Firefox 5 Firefox 6 Firefox 7 Firefox 8.Beginning with Firefox 4, Macs must have an Intel x86 processor (which you do NOT have yours is a PPC Mac) and OSX 10.5 or higher