Firmware Keys/3.x

Final

iPad

Release Date	Build	iPad
3 April 2010	7B367	3.2
15 July 2010	7B405	3.2.1
11 August 2010	7B500	3.2.2

iPhone

Release Date	Build	iPhone	iPhone 3G	iPhone 3GS
17 June 2009	7A341	3.0	3.0	3.0
31 July 2009	7A400	3.0.1	3.0.1	3.0.1
9 September 2009	7C144	3.1	3.1	3.1
8 October 2009	7D11	3.1.2	3.1.2	3.1.2
2 February 2010	7E18	3.1.3	3.1.3	3.1.3

iPod touch

Release Date	Build	iPod touch	iPod touch (2nd generation)	iPod touch (3rd generation)
17 June 2009	7A341	3.0	3.0	—
9 September 2009	7C145	3.1.1	3.1.1	3.1.1
17 July 2009	7C146	—		3.1.1
8 October 2009	7D11	3.1.2	3.1.2	3.1.2
2 February 2010	7E18	3.1.3	3.1.3	3.1.3

Beta

iPhone

Release Date	Build	iPhone	iPhone 3G	iPhone 3GS
17 March 2009	7A238j	3.0 beta	3.0 beta	—
31 March 2009	7A259g	3.0 beta 2	3.0 beta 2
14 April 2009	7A280f	3.0 beta 3	3.0 beta 3
28 April 2009	7A300g	3.0 beta 4	3.0 beta 4
6 May 2009	7A312g	3.0 beta 5	3.0 beta 5
8 June 2009	7A341	3.0 GM	3.0 GM
30 June 2009	7C97d	3.1 beta	3.1 beta	3.1 beta
14 July 2009	7C106c	3.1 beta 2	3.1 beta 2	3.1 beta 2
27 July 2009	7C116a	3.1 beta 3	3.1 beta 3	3.1 beta 3

iPod touch

Release Date	Build	iPod touch	iPod touch (2nd generation)
17 March 2009	7A238j	3.0 beta	3.0 beta
31 March 2009	7A259g	3.0 beta 2	3.0 beta 2
14 April 2009	7A280f	3.0 beta 3	3.0 beta 3
28 April 2009	7A300g	3.0 beta 4	3.0 beta 4
6 May 2009	7A312g	3.0 beta 5	3.0 beta 5
8 June 2009	7A341	3.0 GM	3.0 GM
30 June 2009	7C97d	3.1 beta	3.1 beta
14 July 2009	7C106c	3.1 beta 2	3.1 beta 2
27 July 2009	7C116a	3.1 beta 3	3.1 beta 3

Over-the-air, often used to refer to OTA Updates, where an iOS device downloads and installs an update on itself without assistance from external hardware