Sony PlayStation 3 Firmware 4.90 Download | TechSpot
PS3 System Software Update 4.87 Now Available For Download - PlayStation Universe
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
Cómo hacer jailbreak a una PS3 (con imágenes) - wikiHow
Sony PS3 Receives Firmware 4.66 – Download and Apply Now
PS3 - 4.88 Update is Live! - Official HFW & HEN Released | PSX-Place