Do not use v1.1.1.7 if you need, want, or find inoperative some of the MFY buttons. Here is my conversation on MOZA Discord's flying-chat channel with the background and fix thanks to Martin:
MOZA folks @MOZA_Zak @MOZA Pete, need your help understanding where the problem is at. I received my AY210 and MFY last week and am trying to configure things but have run into 2 problems--I find that the front-facing lower (larger) triggers are not operative on either side. This is buttons 33 and 34. Also, I find that the upper left and right joysticks are inoperative. This is buttons 28 - 32 on the left and buttons 23 - 27 on the right. All other buttons are operative. I have the firmware for both the AY210 and the MFY updated to current versions. Please advise. Thank you.
Martin: I just went through this you have to revert back to the previous firmware. Moza is aware and will hopefully fix it in the next update.
Me: Thank you so much. You nailed it. The reversion process turned out to be just the same as upgrading the firmware. From that screen in Cockpit where the AY210 and MFY (on my setup) appear you chose the MFY firmware dropdown and pick an earlier version. In my case the earlier version was listed as the initial version v1.1.0.5. When I received the equipment earlier this week I immediately checked and upgraded both devices' firmware. The MFY went to 1.1.1.7 and as you pointed out that latest version has the problem. I rolled back (upgraded/updated) via the dropdown to v1.1.0.5 and everything works as it should. Thank you Martin for sharing your knowledge. Truly wonderful.
May be advisable to not to upgrade MFY firmware to v1.1.1.7 but leave v1.1.0.5 alone and wait for a later version.