Upgrading PSP OFW 3.90 to 6.61 without a battery : r/PSP
Sony PSP CFW 6.61 on PSP-1000 and PSP-3000 – McRetro.net
Release: Davee releases Project Infinity - 6.61 Permanent Patch for ME & PRO CFWs - Wololo.net
After having problems getting the system to power on consistently, I finally got it to downgrade back to OFW and now it turns fine. Gonna try a fresh install of infinity tonight
Jak zaktualizować każdy model PSP do firmwaru 6.61? - YouTube
PSP Custom Firmware Guide - Retro Overload
Actualizo mi PSP FAT por USB | 6.61 | NOV 2018 | MaNu - YouTube
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | Page 2 | GBAtemp.net - The Independent Video Game Community
Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix Error Update 9.90 | Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
How To Update Your PSP TO 6.61 Official Firmware in 2021 - YouTube
Cuadro resumen y descarga de Firmwares Originales de Sony | PSP .SceneBeta.com