Are you getting a message or what is happening when you try to submit?
It might be that not all the forms in your return have been finalized yet. If you have Draft forms in your return, it would not allow you to finish your return. Use this link to reference when your tax forms will be available. You can search by TurboTax Product and for IRS and State-Specific Forms.
Please see this FAQ: When attempting to e-file, why am I seeing an "oops, we hit a snag" error message?
When you click on Review and there are forms and/or schedules for your tax return that have not yet been finalized. you cannot file the tax return until they are finalized.
I'm having the same problem. It keeps saying to update the software, but the software is saying it is up to date.
Are you having problems in the state section? Try this: State install/e-file update loop: State not installed after installation or TurboTax needs to update prior to e-file