DOWNGRADE ALL PSP MODELS FROM 6.60 6.38 6.39 6.35 6.20 TO 5.03 6.20 6.35 6.39 *NO PANDORA* - YouTube
Got this baby. System version is 6.39. Never been hacked. What should I do to hack it? 6.60 or 6.61? Confirmation button is O. Can I switch it to X with Infinity
PSPHACKS 1.03] Downgrading Your Custom Firmware From 6.61 to 6.60 Using Chronoswitch 7.0 - YouTube
How to Downgrade any PSP on 6.60 - YouTube
Chronoswitch Downgrader | PSP.SceneBeta.com
PSP: Chronoswitch 7.0 downgrader released - Wololo.net
Infinity 6.61 Downgrade to official FW on PSP Go - YouTube
PSP/PSP GO Official 6.61 Update 2017! - YouTube
Console info - How To Easy Jailbreak Any PSP 6.61 CFW... | Facebook