The MrMario2011 pack includes both PRO and LME custom firmwares. Both are excellent, but is generally preferred for its superior online plugin support and ISO compatibility. Go to Game > Memory Stick . Launch the PRO Update (or LME Installer if you prefer LME). Press X to install the custom firmware modules.
Disclaimer: Modifying your console can carry risks. While Infinity 2.0 is safe, always follow instructions carefully. If you want, I can help you find: for SNES, NES, or PS1 Plugins to improve battery or add a clock Custom themes to change the XMB look Just let me know what you'd like to do next! Share public link psp 661 infinity 20 cfw pack by mrmario2011