App Store
When I want to download a app or update them I got 1009 error what shall I do?
The error code is because of where you are i.e. Iran - there isn't an iTunes Store. And as there isn't an iTunes Store there you must currently have a different country listed as the country on the account, using a country's store when not in that country isn't allowed.
If/when Apple open an iTunes Store the error should stop, or when you are in the country that you have as the country on your account you also shouldn't get the error.