Thanks

I'm really glad also!
Well, in this case it was the good collaboration of the german support from akai and the team from Musicstore.de, they really helped as fast as possible.
They would have shipped a new unit to me after sending back the other one, but luckily I got close to their shop today anyhow, so of course we agreed on bringing in the live and taking a new one with me directly, saving time and shipping costs
Didn't really have time for extended testing yet, but first impression says, it's alright. Installed the firmware first, then installed the SSD drive and tried loading my projects from there - works flawless. Next steps will be checking out all I/O etc, hopefully will find some time for this on the weekend now.