it takes about 6 hours
No, MAG is exclusively for the PS3.
no
you can just take the memory card out of the first PS3 and transfer it to the other PS3
It all depends on your connection with Infinity Ward if you do it when less people are online the faster it is.
no it does not
None
No MAG is a PS3 exclusive and not available for the other consoles
You can not revert the PS3 update
A PS3 update does not require payment and can be found on the PS3 website. You must burn the update on a flash disk or usb then mount it onto the PS3 to update. If you plan to buy a new PS3, the update will already be in place.
No, Mag is only for the ps3 due to the fact that it is developed by Sony.
95MB on sony's servers takes like half an hour - 45 minutes.
Yes, you can use a flash drive to update your PS3. To do this, download the system update file from the PlayStation website, then create a folder named "PS3" and a subfolder named "UPDATE" on the flash drive. Place the update file inside the "UPDATE" folder, and then connect the flash drive to your PS3 to perform the update from the System Update option in the settings menu.