Updating ps3 via cd

Update v1.21 : - Added support for custom firmware 4.78 CEX (no Cobra) and Custom Firmware 4.78.x Rebug REX.Update v1.20 : - Added support for custom firmware 4.76 CEX (Ferrox) and Custom Firmware 4.76.x Rebug REX.SYSCALL must be disabled using a tool like PSNpatch, SEN Enabler, web MAN MOD or another application in addition to the spoof !!!NOTE: You must disable this spoofer if you're upgrading to 4.80 CFW or later.

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Preparing Your PS3 Jailbreak 4.81Jailbreaking Your PS3Community Q&A Jailbreaking your Play Station 3 will provide you with full administrator and developer rights over your console’s stock software.To confirm that the update was completed successfully, once update process is completed, go to the function screen and select (Settings) [System Information].If the version number of the system update file you used for updating the system is displayed in the [System Software] field, this means that the update was completed successfully.Now your ps3 will update and restart to 3.55 rogero CFW.T the firmware should say 4.25 however the firmware installed is 3.55, the 4.25 is just a version spoof so the firmware runs newer games and eventually can connect to PSn.