Sony PlayStation 3 Fat: Downgrade to Firmware 3.55 - YouTube
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LOMBOKGAME - Gameshop Mataram Detil produk JASA DOWNGRADE PS3 FAT/SLIM TANPA BONGKAR Menyediakan console & aksesoris game dengan harga spesial untuk rental
Downgrading with PSgrade Dongle - PS3 Developer wiki
How to Downgrade a PS3 Fat CECH-K,L,M,H,P,Q and Rusti Edition xD By:NSC - YouTube