I had this same issue originally when I first got the X3 2nd Gen (just as it came out, with original firmware) while using a Kingston 128GB micro SDXC card (class 10).  I thought I had the problem solved after reformatting the card several times (via the player), but I stopped using the player...

I purchase from http://ototoy.jp (did again just moments ago actually, downloading 4.7GB at the moment), and they allow credit cards outside Japan.  Good luck :)

Hi all,   I ran into an issue with my X3 2nd Gen that I was finally able to solve after 2 weeks, so I wanted to mention in here in case anyone else runs into the same problem.  (I would have figured it out much sooner if I had simply taken the time out for full trial & error!)   I had been...

Thanks for this, I picked mine up from there last evening, very easy transaction and the guy was nice and helpful.  This is my first FiiO player and so far I'm loving it!