Hi, I'm having some issues with my K17, which I otherwise adore, and so am heartbroken that they've surfaced.  I've only used the unit for a total of about four months since I purchased it last spring.  I have updated all firmware successfully, so that's not the culprit.  I'm using the included stock power cable and it's plugged into a power condtioner, which works well.  I was hoping to learn here if my issues are to be expected, common, or if they're a sign my unit needs repair:

1.   With the front power switch in the off position, when I turn the main power on from the rear, the screen lights up and the FiiO logo comes up, and stays on for about five seconds before everything turns off, and the red light on the front power switch goes on.  I've always assumed this is the way it's supposed to operate, but please tell me differently.

2.      Particularly when playing music locally from a USB-A stick inserted into the rear, the unit intermittently turns off right in the middle of playing a song, and then turns on again, but then has trouble connecting to wifi, requiring me to turn the power off/on from the rear to restore normal operation (it seems something similar was supposed to be fixed in an earlier software update, but as I said, I have successfully updated all firmware of all components as instructed by FiiO). The USB-A stick is brand new, has fast transmission, and meets all requirements.

3.  Occasionally, after using the unit for a while, when I turn the front power switch to the off position, the red light on the power switch stays on, and nothing turns off, the screen remains on, requiring me to use the rear main power switch in order to power the unit down.

Thanks in advance for any suggestions/ideas about how, or if, I should address these issues.  Could it just be buggy software that's going to get fixed in a future update?  Or should I initiate a repair request?