I despise updates that don't allow you to roll back. I've sitting on an update for my Mytek Liberty 2 DAC for 2 YEARS.
As for BluOS and all the other programs, I wish ONE of them would get it right! For example: the search function and the sort function are miserably excecuted. I've see complaints online since the earlies versions of BluOS and the have never done a goddam thing!! I think BluOS is the best of the breed (that I've used) and it still sucks.