Firmware 2.00
Release Date: August 24th, 2005
New Features:
- An internet browser has been added
- 4:3 Screen mode
- 'Go-to' feature, and A-B playback
- MP4 (AVC), and ATRAC 3 support
- Wallpaper and image transfer features
- TIFF, GIF, PNG, and BMP support
- WPA-PSK compatibility has been added to Network Settings


Firmware 2.01
Release Date: October 3rd, 2005
New Features:
- A security patch has been added to address security vulnerabilities in the system software.


Firmware 2.50
Release Date: October 13th, 2005
New Features:
- LocationFree player support
- Auto-select, and Unicode ( UTF-8 ) settings
- Text-size and Display mode settings for the Internet Browser
- Browser history saving is now available
- Copyright-protected video is now supported
- WPA-PSK (AES) security is supported.
- Korean input support.


Firmware 2.60
Release Date: November 29th, 2005
New Features:
- RSS Channel support has been added
- Volume Adjustment for LocationFree player
- Chinese encoding settings have been added
- Copyright-protected video can be transfered from the Internet Browser
- WMA format can now be enabled as well as played


Firmware 2.70
Release Date: April 25th, 2006
New Features:
- Macromedia Flash content is now supported in the PSP Internet Browser
- Connection settings have been added
- Audio media from RSS feeds in the PSP RSS channel can now be saved locally
- AAC audio formats now have a new file extension
- An option to disable 'L' and 'R' buttons during UMD playback is available
- A fix for MemoryStick Duo support over 2GB has been applied


Firmware 2.71
Release Date: June 1st, 2006
New Features:
- PSP Game demos can now be downloaded via the PSP's internet browser and saved to a MemoryStick Duo
- LocationFree video is now displayed correctly on an external tuner


Firmware 2.80
Release Date: July 27th, 2006
New Features:
- Videos and images can now be downloaded via 'RSS Channel'
- AAC files with the .3gp extension can now be played
- 'Automatic' is now an option for 'Infrastructure Mode' in 'Network Settings'
- Support for playback of content stored at the root level of the MemoryStick Duo


Firmware 2.81
Release Date: September 7th, 2006
New Features:
- A security patch has been added to address security vulnerabilities in the system software.


Firmware 2.82
Release Date: October 26th, 2006
New Features:
- Patches have been added to address security vulnerabilities in the system software