Updating mac os x 10 3 9
10.12 requirements have changed the minimum requirements. Here are the requirements with the Machine ID (x,x) as stated in the System Profiler for Mac OS 10.12 Sierra: Mac Book (Late 2009 or newer) 6,1 Mac Book Pro (Mid 2010 or newer) 6,1 Mac Book Air (Late 2010 or newer) 3,1 Mac mini (Mid 2010 or newer) 4,1 i Mac (Late 2009 or newer) 10,1 Mac Pro (Mid 2010 or newer) 5,1 10.12.6 is now available.
For updated downloads, visit my Jaguar and Up page This information is available on Apple's Sierra Requirements page Same minimum system requirements exist under Mac OS X 10.8 and later.
Account Edge has also noticed there is a bug when mailing PDFs directly from Mac OS X Mail.
They recommend using the Print window's built-in PDF - Mail PDF function when you go to print a PDF.
I have a Power PC Mac right now standing at 10.4.8, which I could upgrade to 10.4.11, except I have some old games which won't run on 10.4.11.
Just because you've seen an issue which appears on a bulletin board, or is reported to you by a friend in a Mac OS X update, it does not mean the update is itself bad.
A mathematical improbability exists to test all combinations of software and hardware compatible with Macs.
There are also issues with signatures not working at all in Mac OS X Mail.
Backup (link explains how) your data before you install anything.