Here we have some of the reverse-engineering artifacts I produced during implementation of djictl. djictl is an opensource CLI tool that replaces proprietary DJI MIMO to unlock access to remote control of DJI Osmo devices.

To get BLE logs from an Android phone use:

adb bugreport bt-logs

and adb pull to get the resulting report. Inside the archive look for file FS/data/misc/bluetooth/logs/btsnoop_hci.log.

Then install the Wireshark plugin from ./mimo/ble/wireshark-dissector/, and use Wireshark to open the file. You'll get something like this:

I've managed to make livestreaming work on my DJI Osmo Pocket 3. And I guess for now I'm pausing any further reverse engineering, since that was the feature that I needed.

But I'm happy to answer any questions if you are having problems to continue the research.