Hi, after update, I don’t know how to setup things now, used to have handlers.
I have some Visonic MCT-370 SMA contact sensors, they work perfectly, now I need more to add but the new ones only show as a zigbee thing, I can’t change the driver to zigbee contact, getting error “Error changing device driver to “Zigbee Contact”. Ensure that the driver you are trying to change to has a valid fingerprint match with this device.”. When I go to see old sensors detail, they ARE ussing “Zigbee contact”. I don’t understand why the new ones are not working, they are same sensors…
As for MP-841 motion sensors, they are added as zigbee things too and can’t not change the driver either.
Anyone can help me with this, I really appreciate it, thanks in advance!
I have installed the Edge driver but I can’t change the driver to this, getting the same error
I’m sure that’s very frustrating. 
The most likely issue is that even though they are the same model, they have a different “fingerprint.“ That can happen.“ And the new architecture is much more sensitive to fingerprints than the old one was.
The first thing to do is to go to the advanced page in the new web interface and check the fingerprints for the ones that work versus the ones that don’t work to see if they are in fact different
Here’s an example of what you’re looking for. The two fields together, “Manufacturer Code” and “Model” = the fingerprint.
Thanks for reply, I just checked the new one and the old ones are exactly same, Manufacturer Code is Visonic and the Model is MCT-370 SMA, that’s why I’m so confused… 
Hmmmm….
Looks like some people have that working with one of Mariano’s custom edge drivers. (he is a community member who has contributed a lot of free edge Drivers.)
You will need to follow the link to his channel, subscribe to it, select the edge driver you want added to your hub, and then, after it’s been downloaded, you should be able to select it through the SmartThings app.
Just be aware that changing to a custom edge driver sometimes pauses or even deletes existing routines that use that device, so that’s just something to be aware of. You might have to rebuild the routines after switching.
You can ask further questions about the driver in the author thread:
And if you want more information about edge drivers in general, there’s a community FAQ, but it doesn’t sound like you need that right now. So I’m really just including this link in case someone finds your thread because of the model number, but doesn’t know anything about edge yet.
FAQ: I have no idea what Edge is. Is that a new developer tool? (2022)
Thanks a lot, the EDGE Driver-Mc makes this contact sensor working prefectly, but the motion sensor is not, I’ll seek more info from there, have a nice day!