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
Chronoswitch Downgrader | PSP.SceneBeta.com
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How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
How To Downgrade PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube