As I will soon have a FLIR ETS320 that is in truth a repurposed E8 chassis, I will be looking at applying elements of the upgrade to it.
The firmware is likely 3.5 but I will upgrade it to 3.9.
Only some of the additional features available through the upgrade process will be useful on the ETS320 as it is a bench mounted PCB inspection camera. As it has no visible light camera, enabling anything to do with MSX, Fusion or PiP is pointless. Additional measuring functions would be handy though. Switching off that nasty false noise generator would be good too.
If anyone does apply the firmware 3.9 upgrade to an E5 or higher, I would love to hear about it. The ETS320 arrives with me in a couple of weeks.
Fraser