FLX10 - Firmware (1.14)

I think the 1.14 firmware release comes with an audio issue. (1.13 does this too)

My brand new FLX10 was previously running Firmware 1.12, audio was fine from the controller, and coming from XLR to the speaker was a perfect signal on both sides. When I then updated to 1.14, despite the controller showing levels are fine when run to the speakers, the left channel is quieter than the right.

I did a test with a. friends. FLX10 running 1.12 and the levels were fine, so I assume this is a firmware bug.

Any idea how to fix this, as I can't get 1.12 (for MAC) anymore, and when I rolled back to 1.13, the same issue occurred?