Hello Zwo,
I have a zwo classic asiair since many years,
Recently, I've decided to hang out with my telescope. When I started my asiair app, the app said that my asiair needed to be updated. I've did the update and now I can't even more take photos with my scope.
I was using a Nikon D90 DSLR to take photos, and it was working perfectly fine, until this update (I include you the firmware and app versions in the assets of this message).
The exposure time is locked at 2.5s and I can't even change it. When I click on the button to take photos, it says at the bottom of the app "exposure failed". What's even more surprising is the fact that all exposure times are shown in the list (like 1000s or 600s) but my DSLR can't only take photos up to 30s of exposure time.
My camera is detected normally and connects (it shows me iso and different properties of it), and I've tested different cables to connect it (and USB ports too).
To be honest, I think that the problem might come from the updated firmware.
I hope that you will find a solution, so then I can do astrophotography like before the update 🙌🏻