PS3 - 4.81 (OFW) Firmware Update Now Live !!! | PSX-Place
Recovery Menu - PS3 Developer wiki
PS3 4.81 System Software Update PS Vita 3.63 Update DETAILS - YouTube
PS3 System Update 4.80 Now Available To Download | Attack of the Fanboy
My brother dropped off our old PS3 collection (left). On the right is my collection since this year. It's a slim model on os version 4.81. Do you think it's worth it
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The data is corrupted 8002F165 PS3 Error | PSXHAX - PSXHACKS
PlayStation 3 Architecture | A Practical Analysis
PS3 update 4.82 out & should you update? NO! - Hackinformer