Not sure if anyone is facing this problem. I get really nervous everytime I plug in the micro USB cable provided by ibasso to the dx80 itself.. It doesn't sit on well and I always have this notion that the microusb is going to break...
I have the exact same feeling. The USB cable doesn't seem to fit well. On my model, it goes in part way, then I feel a lot of resistance. I have to increase the pushing force to get the plug to fully seat. This happens with multiple micro USB cables.
While we're talking about the USB interface - I have my DX80 set to be a card reader (ver 1.3.3). This works fine when connected to the computer. However, when I disconnect the USB cable the DX80 doesn't re-mount the SD card. I am unable to browse files on the card. I have to reboot it. Not a big deal, but I was wondering if this is normal, and if iBasso is working on a way to have the unit re-mount the card after disconnecting.