Yes i've send mine last winter for the SW upgrade, now i've 3.21 version in it. MGM have return me the controler with the CC_03 cable to be able to download futur version directly by my computer.
But i've only ranit on 4s with mechanical brake for now.
I've an e-revo that i'am to convert with my brushless stuff in it and i'll be runing it on 6s. But on the e-revo i can't use mechanical brake.
So i hop that my 16018 will hold up fine on 6s with motor brake