PlayStation 3: Sony releases Firmware 4.86 for their 13 year old console - HFW 4.86 released, SEN Enabler updated & PS3HEN to be updated soon due to no kernel changes! - Wololo.net
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PlayStation 3 - Wikipedia
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How to get PS3 Firmware update 4.89 for installing, Google and Edge covered in the video - YouTube
Sony PS3 Receives Firmware 4.66 – Download and Apply Now