[zeeya]

The dual boot firmware creates two separate partitions so independently updating shouldn't be a problem. I've done Android OTA updates & CoreELEC updates without any problem. I've not tried flashing Ugoos firmware as I mainly use CoreELEC, so can't confirm that, but OTA Android is fine.

You mean you are not using Ugoos stock firmware?

I'm using stock Ugoos dual-boot firmware, it's the only way to use CoreELEC. But I'm using OTA updates for Android rather than flashing the updates, because I think doing that will reset CoreELEC to an old version.

That means... you can update only Android through official OTA? How you are doing this? please elaborate...
Can the updates on dualboot CoreELEC done separately?