Upgrading PSP OFW 3.90 to 6.61 without a battery : r/PSP
PlayStation Guide
bruh how do I fix this? (PSP hanging on a blank screen while updating from 6.60 ofw to 6.61 PRO-C) : r/PSP
ARK PSP - GameBrew
6.61 ME & 6.61 LME now available! : r/PSP
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
battery level warning when i update to OFW 6.61, please help me to bypass this, thanks. (PSP Phat) : r/PSP
Install PSP 6.61 Pro-C Infinity Custom Firmware | GBAtemp.net - The Independent Video Game Community
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | Page 3 | GBAtemp.net - The Independent Video Game Community