I've been FW testing on the M2 for a few months now. Mobius are specifically trying to improve low light dashcam performance, using the M1 as an internal benchmark but also with reference to other available cameras.
The output from the M2 is still more grainy than the aesthetically pleasing video on the M1. In return the exposure times are much shorter with a big reduction in motion blur. How much more noise are we willing to accept in pursuit of details like license plates in low light? I started a
discussion on that subject here at DCT to help guide the Mobius development.
I've tried at least 10 beta FW versions and have seen steps forward and backwards, as is to be expected. The last one went too far on high iso. I received a new version last night which looks promising, so I will put my M1 telephoto lens testing on hold while I put the M2's back in the car again.
In recent FW versions the WDR has not been quite so aggressive at night, with exposure generally matching the non WDR video.
I'm not sure when Mobius will reach a point where they are happy to release a public firmware update. I'm an engineer and a photographer, plus a dashcam enthusiast, so I'm quite happy to play with these things and look for improvements. However I realise that for most M2 owners there's been nothing but silence for quite a while and they're probably looking elsewhere for a new camera. That's one reason why I got the new GitUp F1 to see how it compares. I'll share some M2 vs F1 video sometime.
I've kept quiet about my M2 testing so far, as I don't want to set any expectations for new FW releases and improvements. For now they seem interested in what I have to say, and if I can help to direct the development for the benefit of dashcam users then I'm happy with that.