I'm not sure what Eric is doing with the "fix" he devised for his RMX.
Perhaps he can elaborate further for you if you contact him directly through the Spectrasonics link.
The Zendrum code mod project is underway, and we have been discussing which functional improvements to add.
These improvements will be sold as a user-replaceable chip swap, like the upgrade we sell for older ZX's now, so we can ship to Russia whenever its ready to go and you can replace the chip yourself there.
I don't know yet how long this will take to finish, or ultimately, what we will include as additional features. We are in the early prototype stage now. Hopefully, I will have something to test in about a month from Chris De Haas, our engineer.