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however, I clicked on the Help link on the bottom of this page (also on every Amazon webpage) and selected Amazon Devices - See All - Fire tablets. Then I clicked on 4th Gan and later and looked at the menu option until I came to Fire and Kindle updates and clicked on that. That brought up a page where I selected your device and looked at the page that came up.
It doesn't look like there is, but the latest Fire updates are a bit off as far as OS number, they were at a higher number and then went back to an earlier number. As far as I know (this is a customer to customer help forum not Customer Service), that's the latest update, but you can talk to Customer Service to verify.