不太懂是什么东西，似乎有用吧。 https://www.ppxclub.com/694535-1-1 http://bbs.a9vg.com/thread-5642935-1-1.html
Instructions for PSP 1000, 2000, 3000 and Street
Browse into ** directory in the download and copy the file EBOOT.PBP to the PSP/GAME/UPDATE folder on your PSP. If this folder does not exist you may need to create it.
Instructions for PSPgo
Browse into the pspgo directory in the download and copy the file EBOOT.PBP to the PSP/GAME/UPDATE folder on your PSPgo. If this folder does not exist you may need to create it.
Instructions for all PSP models
Once the correct EBOOT.PBP file has been copied to your PSP, you can run the application to install infinity to your device. Re-running the application after installation will allow you to select which custom firmware you want enabled. You will need to run the installer for the custom firmware before enabling it within the infinity app.