Just got my 9th Batch DX50 today. Wow fast shipping from Shenzhen, China to Western KY, United States. Received shipping notice on Nov 19 and recieved today, Nov 21.
So far so good. It came with fw V1.2.5, since I don't have any experience with previous firmware, I'm just going to keep this. I loaded about 100 FLAC files (with 'Folder.jpg' in each folder) onto the internal storage and I see all the files and album art. Been listening for about the past hour and it is total bliss; a much improvement over stock iPod Classic. Color me impressed.
I should have my 64gb SanDisk Ultra MiroSDXC ready by tomorrow, still cleaning up some files and will fill the little guy up and install tomorrow. So we will se how that goes, but for now I'm just going to enjoy the Trampled by Turtles that I have loaded on it now.