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You need to install it as a PKG file, you need to have a working
"Install package files" option and get the file on your usb
the file can be found on the internet, if you need it just ask.

In other words you can but you need a 3.55 or 3.41 ps3.

You can use the Ps3 proxy to install properly sign .pkg's without intstall packages. So if it is a legit 1.11 IW patch then yes you can use the Ps3 Proxy.

what that greenbolt guy said.