I upgraded the firmware in the drone, Controller and the battery that was installed was updated.  How do I upgrade my spare batteries?  I put one in the upgraded drone and it tells me the battery must be sent in for service???  Will someone please point me to documentation concerning upgrading spare batteries after the drone and RC have been updated?

Any reply or consideration is appreciated.

Hi PoppaHotel, could you please clarify your Phantom model?
When you put the other battery in the drone, if there's an update available, the app will prompt you automatically.
And you need to do the same update progress again.
What's the error message?