I have owned the x3 for almost a month now and thought i would share my thoughts on some of the "freezing issues" that people have been experiencing.
my x3 came with the 1.31 firmware, i experienced some freezing with this firmware, initially thought it was random but later on i was able to narrow it down to a few things, read below.
After upgrading to 2.05 the freezing issue still happens, after upgrading to 2.1 there was no improvement, still getting system freeze.
I listen to a mix of flac/mp3 files running on a 32GB sandisk class 10 micro sd card. Gapless play back on, Album covers display on.
initial troubleshooting was just trying to re-produce the freezing to prove that it is not random was quite difficult as it would just freeze up at random songs.
But what i did notice was, the freezing always happens if i am browsing through my music collection, if i just let it play and not touch the player. It will play for hours with no issues.
So this narrows it down to the player freezing due to browsing a song/album rather than from it playing a particular badly encoded file.
After more days of troubleshooting i have come to the conclusion that one of the following or a combination of the things below has fixed my problem:
disable gapless playback
disable album covers - changed to display lyrics
deleted the .db and .journal file and re-scanned the sd card.
it has been a week now and the player has been rock solid. Hope this helps the people that's been having issues!