It is best to ask one's State Corporation Division or a qualified CPA within the area, but often it will require a new filing. Apple LLC and Apple Inc. are considered unique and separate entities, each having a unique name. If one owns Apple LLC and wants to convert it into a C-Corp, that would require filing a new C-Corp uner Apple Inc. and then transferring the assets / LLC into the corporation for $1.00 in lawful money.