I've been pretty lucky I guess? I haven't heard the reversed channel issue yet, my unit actually remembers the volume level after I turn it back on after I shut off. I've dealt with one freeze the first time after the initial scan and another time where the touchscreen couldn't respond.....both cases did a battery pull. Most of the bugs reported seem to be tag related and reading certain symbols in filenames/tags (I got some Japanese music that can't be listened to because the artist name is something that can't be read).....other than that, the player has been solid and extremely quick in response. I don't think it's going to take more than a couple firmware releases to get this thing fairly solid and then just add back the features like everyone wants like search/playlist etc. Most important thing, I've been enjoying the sound more and more the more I listen to it.
Sensui I think most of the weird bevhaviors reported to some degreed are caused by the DX50 hanged/forzen by the special characters it failed to handle.
My experience is that if the folder/file have no special char, the DX50 play nice and I have zero issue. Hack even gapless for flac, aac, m4a, etc all worked out of the box, which is already better than ALL my previous experience with audiophile DAPs.
HOWEVER, once I tried to play a file with the ' quotation mark, all hell broke loose and I got the various issues people reported: track won't play (obviously), scanning media screen keep popping up, volume reverted to 120 after restart, there was even one occassion of channel reverse. These issues are "fixed" with long press to shutdown and start up again AND avoiding the problematic track/folder. These periphiral issues also happen after say I tried to use coaxial to output high bit rate tracks.
This behvaior/finding gave me hope that these are indeed fixable relatively shortly as the ROOT cause seems to be the special character handling, and if I put on my aged old programmer hat on the special character 'error"/"event" weren't properly handled and branched off into all sorts of unexpected issues. Then of course it would be much easier if they had handle the special characters in the first place then to put a lot of exception handling codes into the firmware. This is what I suspect the "in 2 days" patch is going to do. They'd probably try to fix this one main issue, and see if they can mitigate a large portion of periphiral issues.
Of course these are all speculation based on my usage with DX50 and I could be way off. FWIW I didn't bother to re-tag or change the filename etc (as I had ALREADY PAINSTAKINGLY done that more than once for the AKs) and will just see how the next firmware handle them. I got enough tracks without issue to enjoy for now.
Cheers