@WindowsX - Hey man, tried the latest free version. Flashing wasn't too bad, though I HAD to run the installation app as administrator and I needed to connect while pressing previous track, as opposed to turning the device on with previous track pressed - I only say this as help to others who may try it.
For me, the sound was less desirable than the standard 1.1.6 signature. There seemed to be a little muddiness to the lower frequencies and for some reason high end sounded distorted (even at low volume levels) listening via LZA4 and Cayin C5 amp. BUT, your version allows Viper Effects through the line out which was very cool.
Went back to stock (same process but using the included 1.1.1 firmware, then upgrading to 1.1.6 - again for any who might not be sure)
It was nice to have the opportunity to try something different, I really do appreciate the work you've put in to this. It was not for me, but that doesn't mean it won't be someone else's cup of tea