My F77 is sending the wrong keypresses. This is independent of what firmware I have installed on there. I have the split shift, regular (long) backspace. The presses are in the correct general area, usually off by 1-2 keys. I have tried unplugging other USB devices, made sure my F77 is connected directly to the motherboard.
These wrong keypresses can be seen on pandrew’s utility. I select the correct layout, every key registers a press, it’s just the wrong key.