PSP Release: Despertar Del Cementerio 9.01 (PSP unbricker) - Wololo.net
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
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Chronoswitch Downgrader | PSP.SceneBeta.com
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
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