How To Update Any PSP To Official 6.61 In 2018! - YouTube
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
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 | GBAtemp.net - The Independent Video Game Community