Downgrade 10.6 to 10.5 MBP core i5

[bigjobby]

I think your only option is to run 10.5 virtually. Seriously, what serious developer makes software that costs that much and can't keep it up to date with the machines to run it? Just got me wondering, that's all.

The OP did mention that the patch would cost £24K. This is quite common practice with software houses where costs of updates is dependent on the after-sales support options chosen.

Anyway back to topic, how is the OP's current MBP on its last legs? Would a complete reinstall of OSX or any hardware upgrade (eg. RAM/HDD) help? If the current MBP could be made to last the next 12 months until the workflow migration, it might save a bit of a headache.

IMO there are too many differences between 10.6 and 10.5 to try and troubleshoot the problem without knowing the nitty gritty of the workflow app.

The downgrade in Java wouldn't have worked because the newer version "should be" backwards compatible but the OP probably knew that anyway.

 

[Constantine1337]

Or how about this:

What kind of MacBook Pro do you have? Have you thought about upgrading your MBP to RAID SSD so you can squeeze more power until you get the newer system you talked about (which may be compatible with 10.6)? Then you can buy a new MBP.

 

[alust2013]

Or how about this:

What kind of MacBook Pro do you have? Have you thought about upgrading your MBP to RAID SSD so you can squeeze more power until you get the newer system you talked about (which may be compatible with 10.6)? Then you can buy a new MBP.

It's likely one of the original Core Duos. The SSD won't help much if it's an issue with the processor and overheating.

I'd try to get a refurb Core 2 Duo MBP, which will run Leopard (the latest revision of those released before SL, so 10.5 was the original OS. That's probably your best bet for now.

EDIT- make sure it's not a current gen 13" (with the 2.4 or 2.66GHz processor) as that won't run 10.5 either.

 

[Hisdem]

The OP did mention that the patch would cost £24K. This is quite common practice with software houses where costs of updates is dependent on the after-sales support options chosen.

Ah, I think I misunderstood the original posting on that matter. I thought that £24K option was a third party upgrade for the software. Thanks for clearing this up for me!

 

[chrfr]

Last one being a Mac Pro Tower 2.66GHz Quad-Core Intel Xeon MB871B/A purchased from Apple in June 2010 and it did come with OSX 10.6 installed and on DVD instalL.

Those models of Mac Pro date to 2009, before 10.6 was released, and originally shipped with 10.5.6, and that's why you had success. It's not going to work with the Macbook Pro with i5 CPU.

 

[CaoCao]

Has anyone downgraded a MacBook Pro core i5 or i7 to 10.5.X

I have an expensive print workflow system that will only run with 10.5 and below but really need to upgrade my MacBook Pro as its on its last legs.

I have successfully downgraded a Mac Pro Quad-Core Intel Xeon from 10.6 to 10.5 and have had no problems but just wondering if it has been done with MBP i5 or i7 yet!

Cheers people

There's good news and then their bad news

The Bad: It is impossible to downgrade an iX MBP to 10.5

The Good: There are maxed out Mid 2009s that can run Mac OS X Leopard in the Apple Store

The only reason you made it on the MP is because its generation came out on Leopard