Issue after firmware update from 1.0.5 to 1.0.7

What are the steps/instructions for rewinding the firmware?

Ran a program yesterday, upgraded to 1.0.7, ran it today, and now have noise similar to this poster.

I ran a second program and had the machine lose ~8mm of Z-height leading to cutting between two contours and it plunging rapidly through both the part and the board underneath.

I’m using Fusion and the post processor version 31731a89b929cfd1a62f827c2b8ebf233f944dc9