The PSP-661 Infinity 20 CFW Pack is a specialized software package that allows users to install custom firmware on their PSP devices, specifically on the 661 model. Custom firmware for PSPs opens up a wide range of possibilities that aren't available with the stock firmware, including running homebrew applications, playing games from other regions, and enhancing the device's functionality.
PSP/GAME and PSP/SAVEDATA folders).Settings > System Settings > System Information. If you are on 6.60 or 6.61, you are ready. If you are on 6.35 or lower, update to 6.61 via Sony’s official update (NOT via the pack).Moreover, the PSP 661 Infinity 20 CFW Pack by MrMario2011 has been downloaded over 500,000 times across various tech forums (GBAtemp, Wololo, Reddit’s r/PSP). The failure rate is less than 0.5%, and those failures are almost always due to a dying Memory Stick or a user pulling the battery mid-flash. psp 661 infinity 20 cfw pack by mrmario2011
Before Infinity 2.0, PSP 3000 and Go models could only run temporary CFW—meaning you had to re-run the exploit every time the battery died. MrMario2011’s pack solves this by permanently flashing the Infinity bootloader, making the CFW persistent across reboots. Overview The PSP-661 Infinity 20 CFW Pack is
. It is designed to provide a permanent jailbreak for all PlayStation Portable models, including the 1000, 2000, 3000, PSP Go, and the PSP Street (E1000). Pack Contents A typical pack based on this guide usually includes: Official Firmware (OFW) 6.61 : The base system software required for the mod. Infinity 2.0 Installer Format your Memory Stick using your PSP’s System
Install Infinity 2.0: Copy the EBOOT.PBP (from the standard or pspgo folder) to /PSP/GAME/UPDATE/ and run the installer.