[OLD] How to Jailbreak Your PS3 on Firmware 4.89 or Lower! - YouTube
How to Downgrade your PS3 after the E3 Flasher installation By:NSC - YouTube
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just bought my first ps3 (4.80) should I update to 4.88? : r/ps3homebrew
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Ps3 Downgrade Uk - NOW LIVE – PS3 UPDATE 4.80! Update 2: 2-step verification is coming, Sony has confirmed. Additionally, a Twitch app is now available to download from thePlayStation Store worldwide.
HOW To Jailbreak PS3 With E3 Flasher - YouTube
How To Downgrade Your CFW PS3 To A Lower Custom Firmware! [EASY WORKS WITH ANY KIND OF A CFW] - YouTube
PlayStation 3 Jailbreak 4.75 CFW - Jailbreak 4.70 CFW - video Dailymotion
How To Downgrade PS3 4 81 To 3 55 and Install 4 80 CFW Step by Step - YouTube