Found my old PSP-2001 want to upgrade to latest firmware without bricking : r/PSP
Easy Method - PSP How to install PSP 6.61 Pro C2 and if not showing games list on your psp but first download the file�- http://youtu.be/w4xFduw8cdw 6.61 Pro C2 Download- http://www.mediafire.com/?zd268rwbc5sui2e/ DarkSpeed
全てのPSPで使えるCFW - LCFW 6.60 PRO-C fix3 - PSP活用情報局
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
PSP CFW6.61 PRO-C2リリース [導入方法] | Kotyan Life
PSP Custom Firmware 3.90 M33 - Exophase.com
PlayStation Portable (PSP) 6.61 firmware download
Installing Custom Firmware on a PSP : 9 Steps - Instructables
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net