How To Mod Your PSP - CFW 6.61 PRO Infinity - YouTube
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PSP Custom Firmware Guide For All Models 2022 - pspunk
6.61 ME & 6.61 LME now available! : r/PSP
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | GBAtemp.net - The Independent Video Game Community
PSP: 6.61 Infinity - Davee's 'Permanent Patch' for System Software 6.61 - Wololo.net
PSP Custom Firmware Guide For All Models 2022 - pspunk
PlayStation Guide
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
Complete Guide to PSP Custom Firmware | ReviveToday