Hi! Im trying to update it to 4.3.3 but it gives me lots of errors.
In pc: Error 3194
In Mac: This Device isnt eligible..

I checked the hosts file and everything is ok, what should be with # has it...

any oder tip?

Do your homework. You cannot upgrade/downgrade to 4.3.3 without an SHSH on file now. If you don't know what an SHSH is, check the link in my signature for information about them, but the bad news is that if you don't have an SHSH for 4.3.3 now, you can't get one. This topic has been discussed in nearly every upgrade/downgrade thread on the board. Please search before posting next time.