> Is there any way to update/downgrade psmove controller firmware?
For the original Move Motion controllers, there is this:
https://github.com/nitsch/moveonpc/wiki/Hardware-and-firmware
But since Sony never officially released firmware updates, this is
mainly useful for repurposing the controller or hacking the firmware.
> Magnetoscope calibration is disabled in the new controllers, and not sure
> if it is hardware or software related.
If you are talking about Move controllers for the PS4, that seems to be
a hardware downgrade. Magnetometers have been removed. Nothing a
firmware change could bring back.