Find something else to do it does not take any longer than it takes and is sorta like a watched pot. If you are not sitting there waiting for the updates to be completed they will take the same time, but the time will pass faster when you're not sitting there waiting for it to finish
You can not revert the PS3 update
The best way is to sign up for Playstation Plus and use the automatic update feature for the games and systems. It will not update much faster, but since it updates while you are not using the PS3 when you go to play everything will be updated for any games you have played or for the PS3. Internet connection speed can also become faster when updates are done during lower network usage times or with a better connection speed from your internet service provider
It all depends on your connection with Infinity Ward if you do it when less people are online the faster it is.
It takes a few minutes for each step if you have an online connection
It will update the software and it will go faster.
you need to update the system. then it will install the new update. or it could be the smudges on the disk
You can only update the PS3 manually either by initiating it from the System Update menu in the XMB (via internet or from an insertable storage media), or responding to an update message when you login to your PSN account. Either way, the update shows its progress on your screen as it happens, and turning your PS3 off in the middle of an update can cause a lot of problems (loss of data type problems).
PS3 is on Update 4.21 released on July 6, 2012. Update 4.11 was February 16, 2012. System Update 3.10 was November 19, 2009
No, but there are system updates which apparently crash your PS3. SO I would recommend you stick to the original Sony Updates and wait for some reviews of the update before updating because some people claim that their PS3's were bricked by the 3.21 system update.
By asking the administrator.
Well first you have to update your system
You might need to update your PS3 if that is what you have. To update offline put in your game and a message will say you need to update to version. To play online go to settings and select "update system" to update it.