The most recent firmware update has been pretty problematic for me. Biggest issue is that I can no longer view the images stored on the S50 through the app. Every time I try it just has a spinning wheel and then it disconnects from the seestar. It will do this over and over again, but rarely lets me into the storage folder. This makes it difficult to browse the subs and remove bad ones before stacking.
Other issue I've noticed is that images don't get saved to my photos app on my phone. I can only access the saved images through the app. Just adds some annoying steps if I want to share images.