Player crashes too often from

Even with the current firmware version (2.1) is the manufacturers have not been able to program a decent operating system. Specifically crashes the device from CA in a of about 10-20 cases, if you continue to press a track, and right after that adjusts the volume. But what is unfortunately inevitable in my application with many different blended tracks. Since only helps off (10 seconds OFF press) what the unit acknowledged with a bang, which has shot up to me, unfortunately my 500 subwoofer. I'm talking accordingly poorly on the FiiO X3. Since I after every crash just place can not turn off the amplifier, the unit will therefore return. Too bad, otherwise I would have become a real fan - the device feels very valuable, playing very loud, even on the completely stupid key arrangement you get used to at some point, and the battery life is just so just fine. Who more complete albums listening and therefore not so often have to adjust the volume, which should be satisfied with the X3.