If you want to use homebrew software on your PSP, you can install custom firmware.
* The importing of playlists from the Media Go application is now supported under [Video].
Leaks were exploited and one after the other, the firmwares fell.
You can update your system software by any of the following methods: System Update » Required items A PSP (Play Station Portable) system with battery pack and AC adaptor Memory Stick Duo media with at least 28 MB of free space or System storage with at least 28 MB of free space Installing a Custom Firmware on your PSP 1000 has never been so easy.In this page I’m describing the easiest possible way for you to install the most reliable Custom Firmware on your PSP:...The screen should blank out then flash green, showing that Chick HEN has loaded. If it just hangup and shutdown PSP then your got to retry until it automatically reboot your PSP.It may take a few tries to work, in fact it took me 7 tries to get it to work.It allows you to add the functions and/or applications that Sony did not take care of. When you’re dealing with an open platform, piracy arises.
Due to this (and probably some other reasons as well), Sony has been trying to repress homebrew as much as possible.
Where these applications could initially be run on the 1.50 firmware PSPs, users who updated wouldn’t be so fortunate.
But the community (read: hackers) did not accept defeat.
Instead of enabling people to run homebrew, the PSP hacking groups have started building their own PSP custom firmwares.
Their firmwares are nearly identical to the official ones, only better.
wiki How to Upgrade Your PSP Firmware Four Methods: Using the PSPUsing Your Computer Using a UMDInstalling Custom Firmware Community Q&A Your PSP firmware controls your system settings, and new versions get released to add features and fix errors and security problems.