Releases of Mac OS X prior to Mavericks were paid upgrades. As such, full installers mostly do not exist for these versions. Apple made exceptions for Mac OS X Lion and OS X Mountain Lion, which were released as a free download on the Apple Support website on 2 July 2021[1][2]
. On 24 October 2019 and 10 February 2015 , in preparation for an Apple Software Update certificate expiring causing installer packages to display an integrity error and refuse to install, Apple reissued many updates, signed with a new certificate.To install copies of macOS without updated certificates, change the Mac's system clock to sometime prior to 24 October 2019date 1001000019
to set the date to midnight on 1 October 2019 . Press ⌘Q to quit Terminal and return to the installer.
Most downloads are a patch updater (upgrading directly from the previous version), or combo updater (upgrading from any earlier version in the same major release). To perform a clean installation of macOS, use a full release build.
Version | Build | Release Date | Download URL | File Size | Documentation |
---|---|---|---|---|---|
10.6 | 10A432 | 28 August 2009 | Paid Release | — | — |
10.6.1 | 10B504 | 10 September 2009 | MacOSXUpd10.6.1.dmg | 75,060,469 | Release Notes Security Notes |
10.6.2 | 10C540 | 9 November 2009 | MacOSXUpd10.6.2.dmg MacOSXUpdCombo10.6.2.dmg |
496,209,407 503,688,864 |
Release Notes Security Notes [Archived 2013-11-11 at the Wayback Machine] |
10.6.3 | 10D573 | 29 March 2010 | MacOSXUpd10.6.3.dmg | 755,089,897 | Release Notes Security Notes |
10D575 | 1 April 2010 | ? | ? | ||
10D578 | 13 April 2010 | MacOSXUpdCombo10.6.3v1.1.dmg | 823,434,855 | ||
10.6.4 | 10F569 | 15 June 2010 | MacOSXUpd10.6.4.dmg MacOSXUpdCombo10.6.4.dmg |
637,216,526 931,479,789 |
Release Notes Security Notes |
10.6.5 | 10H574 | 15 September 2008 | MacOSXUpd10.6.5.dmg MacOSXUpdCombo10.6.5.dmg |
676,454,030 1,025,718,086 |
Release Notes Security Notes [Archived 2014-09-14 at the Wayback Machine] |
10.6.6 | 10J567 | 6 January 2011 | MacOSXUpd10.6.6.dmg MacOSXUpdCombo10.6.6.dmg |
150,613,817 1,055,698,605 |
Release Notes Security Notes |
10.6.7 | 10J869 | 21 March 2011 | MacOSXUpd10.6.7.dmg MacOSXUpdCombo10.6.7.dmg |
498,866,006 1,056,906,794 |
Release Notes Security Notes |
10J3250 | MacOSXUpd10.6.7forMacBookProEarly2011.dmg | 386,642,732 | — | ||
10J4138 | 4 May 2011 | MacBookProSoftwareUpdate1.4.dmg | 140,094,437 | ||
10.6.8 | 10K540 | 23 June 2011 | MacOSXUpdCombo10.6.8.dmg | 1,087,734,040 | Release Notes Security Notes |
10K549 | 25 July 2011 | MacOSXUpd10.6.8.dmg MacOSXUpdCombo10.6.8.dmg |
475,989,889 1,087,734,040 |