Thanks to Roberson Ricardo above for what follows below:
Ok, I did this, and it works.... But I suspect that the sequence is important. This is what I did:
1. Mine is a
Mini 2 and it was on firmware 01.06.0200 with RC-N1 firmware 4.11.02 and DjiFly 1.9.4
2. I first upgraded DjiFly to 1.10.0
3. Then started drone and remote control. Ensured connection with drone and full GPS coverage.
4. Then unplug cable from top of RC, replug into bottom port on RC and ran Galbb patch.
5. Replug cable to top RC port and check Transmission Tab in DjiFly for FCC.
6. Then only go to About Tab in DjiFly and check for aircraft firmware update in the About Tab. Do the update to 1.07.0200.
7. Check and confirm that craft is still in FCC mode.
You can now switch off
Mini 2 and RC-N1 RC, change craft battery, etc.....
And when you again power on the craft and remote, you'll see that the
Mini 2 now is permanently in FCC mode. I have no idea how to now go back to CE mode, not that I would ever want to.
This is a complete game changer.... and I will now gladly stay on this combination of firmwares and Fly App.
Please comment if this works for you as well.