Have tried to update foreign asset answer to 'no', but the software doesn't keep the "no" answer, instead purchase upgrade because of foreign assets

You may have triggered form 8938 when you originally were asked the question. If so, you will want to delete it.
 

1. To delete the 8938, from the left menu  select Tax Tools followed by Tools and and select Delete a form in the pop-up
2. Scroll down the list of forms. When you scroll through your federal forms, locate 8938.
3. Next screen will say Delete Selected Form. Here you will select Delete Selected form to confirm. You should get Form Successfully Deleted. Select Continue
4. Back at the Review Form List screen, scroll down to make sure Form 8938 no longer appears on the list. If it doesn't, you can select Continue With My Return