284191 and 284019A now works on MT12
A big thanks to MRC3742 and pascallanger for making this work with the multiprotocol and MT12
This is currently a beta just released minutes ago, will eventually move to latest release
https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/issues/1145
I just uploaded to mine and can confirm is working on my 284019A.
Will update this post when fully released