Tytera md380/390 "Universal" keys?

Hi I wonder if you plan to support "universal" keys for TYT 380/390 radios? I found how they stored in codeplug, 1 byte for key type (aes256/aes128/rc40) and keyID is 31..32.. sequence of max 3 numbers. The only thing is that they are encrypted with I guess aes key, but its the same for all the radios I guess, in my tests both radios with same keys encrypted to same cipher.