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Amazon.com: Customer reviews: Playstation 3 PS3 80GB Sony Firmware OFW 3.55 Console
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PS3 Downgrade Jailbreak 4.82 to 3.55 No Password No Survey - Tested
Sony PlayStation 3 Fat: Downgrade to Firmware 3.55 - YouTube
Sony PlayStation 3 PS3 Slim 160GB Console PS3 3.55 (CECH-2503A PS3 Firmware 3.55 711719177364 | eBay
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SANY ilaya - UPDATE!!! PS3 4.50 OFW DOWNGRADE (hardware flasher method)/UNBRICK SERVICE for BRICKED PS3 due to FAILED firmware updates (see guide below) JAILBREAK: -Software: for firmwares 3.55 below (slim and phat) -