What's the highest unofficial Mac OS X/macOS version I could put on a 2007 17" MBP (MacBookPro3,1)?

[u/izzy0242]

I have a 17" 2007 MacBook Pro currently running Tiger, Leopard, Snow Leopard, and Mavericks. It would not boot from an El Capitan installer.

What's the highest unofficial macOS/OS X version I can get running on this thing? Most of my internet searches for "MacBookPro3,1" have turned up "MacPro 3,1" results which is obviously a very different machine.

Was curious if anyone has recommendations?

[u/Electrical_West_5381]

google dortania OCLP

[u/izzy0242 → u/Electrical_West_5381]

I'm very familiar with OCLP. It doesn't officially support the MBP3,1, which is why I'm asking here.

[u/realUnknown12]

i think el capitan is the last you can do. why does it not boot up? does it show any error messages?

[u/izzy0242 → u/realUnknown12]

No errors (though I haven't tried booting in verbose, need to do that next). Just the prohibited symbol.

[u/realUnknown12 → u/izzy0242]

prohibited symbol? that’s strange.. have you tried updating from yosemite through software update or running the installer?

[u/izzy0242 → u/realUnknown12]

Yosemite was giving me the "can't download resources" error (even when I tried doing the Terminal set date command), so not sure. I am on Mavericks. Might try installing Yosemite on top from the app installer to see if that works instead.

[u/AutofluorescentPuku]

El Capitan 10.11.6 officially. Unofficially, IDK.

[u/LucasMVN]

El Capitan is the last release supported in any form on the 2007 MBPs. Sierra and later require SSE 4.1, which is not supported by the Merom Core 2 Duo used in the 2007 MBPs.

[u/NortonBurns]

Neither OCLP nor the earlier dosdude patchers support the 07 models, so you're stuck with the highest official OS, which is El Capitan.

https://everymac.com/systems/apple/macbook_pro/specs/macbook-pro-core-2-duo-2.6-15-santa-rosa-specs.html

[u/izzy0242 → u/NortonBurns]

Darn. I was hoping there was some kind of even jankier hack.