< Beta Firmware | Mac
Note: "DP" refers to "Developer Preview"
| Version | Build | Release Date | Download URL | File Size |
|---|---|---|---|---|
| 10.8 DP | 12A128p | 16 February 2012 | ? | ? |
| 10.8 DP 2 | 12A154q | 16 March 2012 | ? | ? |
| 10.8 DP 3 | 12A178q | 16 April 2012 | ? | ? |
| 10.8 DP 3 Update | 12A193i | 1 May 2012 | ? | ? |
| 10.8 DP 3 Update 2 | 12A206j | 16 May 2012 | ? | ? |
| 10.8 DP 4 | 12A239 | 11 July 2012 | ? | ? |
| 10.8 DP 4 Update | 12A248 | 18 June 2012 | ? | ? |
| 10.8 DP 4 Update 2 | 12A256 | 26 June 2012 | ? | ? |
| 10.8 GM | 12A269 | 9 July 2012 | ? | ? |
| 10.8.1 beta | 12B13 | 10 August 2012 | ? | ? |
| 10.8.1 beta 2 | 12B17 | 17 August 2012 | ? | ? |
| 10.8.1 beta 3 | 12B19 | ? | ? | ? |
| 10.8.3 beta | 12D32 | 26 November 2012 | ? | ? |
| 10.8.3 beta 2 | 12D38 | 5 December 2012 | ? | ? |
| 10.8.3 beta 3 | 12D43 | 18 December 2012 | ? | ? |
| 10.8.3 beta 4 | 12D44 | 20 December 2012 | ? | ? |
| 10.8.3 beta 5 | 12D50 | 8 January 2013 | ? | ? |
| 10.8.3 beta 6 | 12D54 | 16 January 2013 | ? | ? |
| 10.8.3 beta 7 | 12D58 | 24 January 2013 | ? | ? |
| 10.8.3 beta 8 | 12D61 | 30 January 2013 | ? | ? |
| 10.8.3 beta 9 | 12D65 | 6 February 2013 | ? | ? |
| 10.8.3 beta 10 | 12D68 | 14 February 2013 | ? | ? |
| 10.8.3 beta 11 | 12D74 | 28 February 2013 | ? | ? |
| 10.8.3 beta 12 | 12D76 | 5 March 2013 | ? | ? |
| 10.8.3 beta 13 | 12D78 | 12 March 2013 | os_x_10.8.3_build_12d78_delta_update.dmg os_x_10.8.3_build_12d78_combo_update.dmg |
588,432,810 854,169,002 |
| 10.8.4 beta | 12E27 | 1 April 2013 | ? | ? |
| 10.8.4 beta 2 | 12E30 | 9 April 2013 | ? | ? |
| 10.8.4 beta 3 | 12E33a | 17 April 2013 | ? | ? |
| 10.8.4 beta 4 | 12E36 | 23 April 2013 | ? | ? |
| 10.8.4 beta 5 | 12E40 | 30 April 2013 | ? | ? |
| 10.8.4 beta 6 | 12E47 | 8 May 2013 | ? | ? |
| 10.8.4 beta 7 | 12E52 | 15 May 2013 | ? | ? |
| 10.8.4 beta 8 | 12E55 | 24 May 2013 | os_x_10.8.4_build_12e55_delta_update.dmg os_x_10.8.4_build_12e55_combo_update.dmg |
380,515,754 871,265,706 |
| 10.8.5 beta | 12F9 | 19 June 2013 | ? | ? |
| 10.8.5 beta 2 | 12F13 | 26 June 2013 | ? | ? |
| 10.8.5 beta 3 | 12F17 | 3 July 2013 | ? | ? |
| 10.8.5 beta 4 | 12F20 | 10 July 2013 | ? | ? |
| 10.8.5 beta 5 | 12F23 | 17 July 2013 | ? | ? |
| 10.8.5 beta 6 | 12F26 | 24 July 2013 | ? | ? |
| 10.8.5 beta 7 | 12F30 | 31 July 2013 | ? | ? |
| 10.8.5 beta 8 | 12F33 | 7 August 2013 | ? | ? |
| 10.8.5 beta 9 | 12F36 | 4 September 2013 | ? | ? |