PS3 - 4.88 Update is Live! - Official HFW & HEN Released | PSX-Place
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SONY Torne Update Disk Ver.4.0 & PS3 System software Ver.4.11 Off-line | eBay
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
How to Update a PlayStation 3 - Support.com TechSolutions
PS3 How To Put The Update Firmware On USB Tutorial - YouTube