Updated README with a warning about flashing on VHF versions of MD-380/390

README.md

@@ -6,7 +6,7 @@ with modularity, flexibility and performance in mind.
 
 Currently OpenRTX is being actively developed for the following radios:
 
-- TYT MD-380/390
+- TYT MD-380/390 **UHF versions only**
 - TYT MD-UV380/390
 - TYT MD-9600
 - Radioddity GD77
@@ -18,6 +18,8 @@ For information on currently supported radios and features, see the [Supported P
 
 For hardware and software documentation visit [openrtx.org](https://openrtx.org/)
 
+**WARNING: DO NOT flash the OpenRTX firmware on an MD-380V(G) or MD-390V(G)! The codebase has not been fully tested on these devices.**
+
 ## Flash on MD-3x0 and MD-UV3x0
 
 On TYT MD-3x0 and MD-UV3x0 you can flash our firmware using tarxvf's web based flashing tool.