[Lammy]

I suppose it depends on the system? I have updated Sigma, TAMRON, and XiaoYi lenses on my Panasonic and Olympus MFT bodies, as well as Panasonic and Olympus with each other: https://support.jp.omsystem.com/en/support/imsg/digicamera/d... (Sadly not an exhaustive list. I have firmware for several more lenses stashed away in my archive, but the upgrade mechanism is the same.)

[CobaltFire]

I shoot the m43 system (have since the GH2, then E-M5, E-M1, and now a G9 II) and didn't realize this.

I only have one lens tight now (I tend to stay small on my system but this is a low point) but I'll keep it in mind.

Thanks for the info!

[Lammy]

Here's a counter-example, too: Metabones EF↔MFT speedbooster that has its own USB port and update+config app: https://i.ibb.co/t7mDFLJ/image.png https://i.ibb.co/PsSH2M3R/image.png

[CobaltFire]

That one I'm aware of. I used to own one!