PS3 Firmware 4.88 released, do not update just yet - Wololo.net
Sony PlayStation 3 Firmware 4.88 Download | TechSpot
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Playstation 3] System Software Update 4.85 Released - MateoGodlike
PlayStation 3: Sony releases Firmware 4.87 for their 14 year old console - HFW 4.87.1 is already out with SEN Enabler already being updated to spoof FW 4.87 - Wololo.net
PlayStation 3 System Software Update 3.72 Now Live (updated) | by Sohrab Osati | Sony Reconsidered
PS3™ | System Update
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PS3 Firmware Update 4.70 Available for Download, Brings Fresh PSN Logo - Update