How can i download the iOS5.1.1?

[asugarman]

It says that I don't have enough storage yet I have 5gb of storage from iCloud available?!

 

[skimonkey]

It says that I don't have enough storage yet I have 5gb of storage from iCloud available?!

That won't count as part of your internal storage, though.

 

[twerppoet]

Check how much Storage you have left on the iPad itself (Settings > General > Usage). You may have to (at least temporarily) delete some larger apps or files to make room.