noob question - how to I update FW to 3.66?

Hi guys,

I have "60" hardwear (new unreleased torqueboards VESC6's). I'm getting the error saying that if I use FW 3.63 that at high current my throttle could get stuck if using a PPM based controler (I am).

I've never had to upload FW to the tool, I think I found the FW code but can some double confirm for me how I get that into the VESC tool itself?

Thanks in advance.