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
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Update PS3 Via USB To 4.88 4.87 or 4.86 ( Using Update via Storage Media ) - YouTube
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Sony PlayStation 3 Firmware 4.88 Download | TechSpot
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