Okay guys the PSP has been out forever!! However many people have been curious on how to hack or PSP. Follow these steps and then you'll have your own PSP hacked with 6.20 CFW!
1.) Download the "Downgrader" if not already CFW 6.20
2.) Download the TN_HEND
3.) Download Prometheus ISO/CSO Loader
Okay once you have downloaded all of the links take the folders from inside the downloads and place them on the root of your PSP's Memory Stick (E:/PSP/)
4.) Once the folders have been placed on the root of your memory stick, simply UNPLUG the USB cable from your PSP, and go to your GAME section. Go to the very LAST folder where all of your gamesaves and CFW downloads are. Run and install the TN_HEND and then wait till your PSP takes you back to the main PSP screen. Then Run PROMETHEUS and BOOM!!! Your PSP is hacked!!
5.) Create a folder on the root of your memory stick named "ISO" and place the ISO's there
6.) ENJOY, LIKE, THUMBS UP
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6.20TN-E [ Register or Signin to view external links. ]

Half-Byte Loader [ Register or Signin to view external links. ] .