PSP firmware

12 December 2004 : PSP firmware 1.00
24 March 2005 : PSP firmware 1.50
11 May 2005 : PSP firmware 1.51
08 June 2005 : PSP firmware 1.52
27 July 2005 : PSP firmware 2.00
03 October 2005 : PSP firmware 2.01
13 October 2005 : PSP firmware 2.50
29 November 2005 : PSP firmware 2.60
25 April 2006 : PSP firmware 2.70
01 June 2006 : PSP firmware 2.71
27 July 2006 : PSP firmware 2.80
07 August 2006 : PSP firmware 2.81
26 October 2006 : PSP firmware 2.82
21 Novenber 2006 : PSP firmware 3.00
22 November 2006 : PSP firmware 3.01
06 December 2006 : PSP firmware 3.02
20 December 2006 : PSP firmware 3.03
30 January 2007 : PSP firmware 3.10
08 February 2007 : PSP firmware 3.11
28 March 2007 : PSP firmware 3.30
19 April 2007 : PSP firmware 3.40
31 May 2007 : PSP firmware 3.50
29 June 2007 : PSP firmware 3.51
23 July 2007 : PSP firmware 3.52
11 September 2007 : PSP firmware 3.70
13 September 2007 : PSP firmware 3.71