Here it is fall of 2012, and I have finally decided I'd like to upgrade my 3rd gen , 32 gig Ipod touch to 4.0 software. I can't seem to figure out why it's not working... I keep getting the error: "this device isn't eligible for the requested build" Now, my ipod is not jailbroken. I took a look at my host file, there is no gs.apple redirect going on. I am running Itunes 10 on Leopard 10.5.8, and I only want to upgrade the Ipod touch so I can use the square app to process credit cards. Any idea why I keep getting this message or how to update? I would just install 5.0 but I would need to upgrade my whole mac op system to keep moving up with itunes. I just want to be able to run 4.0.