MundoPhone - Ya disponible el downgrade de PS3 a firmware 3.55 y posterior subida a Custom Firmware para que puedas disfrutar de tus copias de seguridad sin tener que deteriorar tus discos,
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How to Downgrade PS3 Slim to 3.55 using the E3 Flasher (The Easy Way) - YouTube
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How To] Downgrade PS3 Slim Using E3 Flasher - Refresher Tutorial 2017 - YouTube
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Downgrade PS3 de CFW 4.83 a CFW 4.82 o Inferior - TUTORIAL FACIL - YouTube
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