First, read the English article below.

Hacking your PSP will allow you to access a wide variety of custom made software. This software is called Homebrew, and it ranges from games to productivity programs.  Hacked PSPs can also run emulators, which are programs that allow you to play games from other consoles on your PSP. Hacked PSPs can run images of PSP games without having to have the original copy. This is for legal backups only. There have been a lot of variations on hacking the PSP as the years have gone by. Now that the console is no longer supported, a standard hack has appeared that works on all systems running the latest official version. 

Now, please write a short abstract for it in Chinese. Abstract:
了解 PSP 破解。 了解各种破解方式。