mmh, do you had or have some Fiio items working?
Rose has a problem with their software, but it has become better in some areas with the latest updates.
Eversolo (I’ve also a DMP-A6) has fixed many bugs in the first time, but now they stopped with it and really not all is fixed.
Fiio (currently using here some mobile DACs, a R7 streamer and the M11s DAP) is like the same as eversolo, but here you can be sure, that many things at first are not working.
Really good in their firmware are e.g. Lumin (had a U1 and T2) and Naim (using here an Atom Uniti HE and Muso 2)


