There are a limited number of upgrade cards that supported 8.5 through enablers, Sonnet having one of them: https://lowendmac.com/2016/powerpc-601-cpu-upgrades-for-68040-macs-with-lc-p... Also, there are hacks for unsupported PPC-upgraded 68k Macs to run 8.5: https://web.archive.org/web/20080313221929/http://members.aol.com/robertotec... Yes, 8.5 could run 68k apps on PPC upgraded machines. - Alex On Tue, Jun 10, 2025 at 3:45 PM John Heritage via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:

When Apple released macOS 8.5 for classic Macs, Apple "no longer supported 680x0 processors".

Would 8.5 run on any 68K Macs that had a PPC accelerator card? If yes, what was the latest macOS tht would support this configuration? And would any native 68K apps "run" under this config on the original 68K hardware?

Thanks! John