There may be actual hope for all droid users , moto x, ultra, mini & maxx only.
According to this article
https://www.qualcomm.com/news/releases/2009/02/16/qualcomm-introduces-worlds-first-complete-multi-mode-3glte-integrated
The chip set present on these models i.e. msm8960 supports evdo up to rev b. How it can be made to work only gurus can tell.