How to upgrade Firmware on AC300 using the BLUETTI APP

Hi all. I have clicked high and low on the app searching for a way to upgrade the firmware on the AC300. I even tried turning off WiFi and using only Bluetooth standing in front of the device. Tried through the screen on the Bluetti.
The manual says it can be done, but doesn’t show a step that gets you from the device info and the firmware upgrade screen. Can someone explain it to me? Thank you

Maybe you are already at the newest firmware? My AC300 arrived early this month and it also has no firmware updates available.

I saw this issue come across earlier: