PSP Firmware 3.52 Released
Sony has released version 3.52 of the PSP firmware to provide additional support for PlayStation Network PSX titles. Other than that there's not much to report.
Just be aware that upgrading to this version will destroy any dreams of running homebrew software in the near future. However, if you still wish to upgrade then you can download the update from Sony's site using the link below or by using the Network Update feature on your PSP.
Download PSP System Update 3.52Via
PlayStation USA