Updating An Old 6.20 CFW PSP To The Latest 6.61 CFW! - YouTube
PSP Custom Firmwares 6.20 ME-1.9 and 6.20 LME-1.9 (with perma patch) are now available! - Wololo.net
PSP Firmware Update Cannot be Started - Techyv.com
I was trying to downgrade my PSP go to 6.20, but it warned me that the [Resume game] feature would be deleted. Does that mean I won't be able to use the
PSP Custom Firmware 6.20 LME-1.9 can now be permanently installed! - Wololo.net
PlayStation Portable system software - Simple English Wikipedia, the free encyclopedia
4 Ways to Upgrade Your PSP Firmware - wikiHow
HOW TO INSTALL 6.20 PRO B10 PERMANENT PATCH ON ANY PSP MODEL *NO PANDORA* - YouTube
PSP Custom Firmware 6.20 LME-1.9 can now be permanently installed! - Wololo.net
PlayStation Portable system software | Ultimate Pop Culture Wiki | Fandom