UMD drive doesn't work after updating to 6.61 Infinity PRO CFW : r/PSP
Mandatory PSP Firmware 6.61 Released Today, First in Three Years - Hardcore Gamer
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
PSP 3000/goを含む全てのモデルに対応した、再起動後も改造状態が維持される「6.61 Infinity」リリース [導入方法] | Kotyan Life
Sony PSP 1004 Soft. 6.61 PRO-C incl. Oplader in Nette Staat - Used Products Heerhugowaard
PSP: 6.61 Infinity - Davee's 'Permanent Patch' for System Software 6.61 - Wololo.net
Sony выпустила прошивку 6.61 для PSP
PSP 6.61 Firmware Update Download
Easy Method - PSP How to install PSP 6.61 Pro C2 and if...